Filed Pursuant to Rule 424(b)(3)
Registration No. 333-155800

April 2013 Performance Update

The Frontier Fund Supplement Dated April 30, 2013 to Prospectus Dated April 30, 2013.

The Frontier Fund Class 1 Original

THE FRONTIER FUND’S GOAL: To provide you – the investor – with a managed futures product that, over the long term, provides attractive returns, reduces volatility, and improves the overall performance of your investment portfolio.

December performance for the various Series of The Frontier Fund is detailed below:*

The Frontier Fund Class 1 Original	April 30, 2013			April 30, 2013			NAV / Unit
	MTD			YTD
Balanced Series-1		3.57	%		1.68	%	$	118.28
Frontier Select Series-1		2.68	%		6.86	%	$	84.06
Currency Series-1**		-2.37	%		-3.99	%	$	54.64
Frontier Heritage Series-1		2.91	%		10.62	%	$	104.59
Winton Series-1		4.08	%		8.70	%	$	142.10

Additional information, including monthly rates of return, concerning the aforementioned Series and the Trading Advisor(s) is contained in the Prospectus and the respective Series Appendix to the Prospectus.

* The above table sets forth the actual performance for the Class and Series as of April 30, 2013. Actual gross trading performance (gross realized and unrealized gain/loss before deduction for trading commissions and fees, management fees, any other expense, and before addition of interest income) is adjusted for the trading expenses, management fees, initial service fees, on-going service fees, and interest income of the applicable Series.

** Effective April 19, 2013, the Currency Series ceased operations and liquidated. All existing investors were redeemed as of April 19, 2013 at that date’s unit net asset value.

THIS INSERT MUST BE ACCOMPANIED OR PRECEDED BY THE CURRENT PROSPECTUS OF THE FRONTIER FUND

PAST PERFORMANCE IS NOT INDICATIVE OF FUTURE RESULTS

THE FRONTIER FUND BALANCED SERIES—1

STATEMENT OF INCOME (LOSS)

FOR THE MONTH ENDED

April 30, 2013

(Unaudited)

	Current Period
INCOME
Realized trading gain (loss)	$	261,145.79
Unrealized trading gain (loss)		5,980,995.53
Less: Commissions		(139,806.02	)
Less: Trading Fee paid to Managing Owner		(98,955.91	)
Interest income		10,425.32
Total Income		6,013,804.71
EXPENSES
Broker service fees		342,613.59
Incentive fees		990,052.09
Management fees		110,577.80
Total Expenses		1,443,243.48
Net Income (Loss)	$	4,570,561.23

Statement of Changes in Net Asset Value

	Units			Dollars			$’s per unit
Net asset value, beginning of month		1,134,525.22520		$	129,567,330.28		$	114.20
Current month additions		212.66334			25,223.77
Current month redemptions		(46,748.62489	)		(5,479,253.36	)
Net income (loss) for current month					4,570,561.23			4.08
Net asset value, end of current month		1,087,989.26000		$	128,683,861.92		$	118.28
		Monthly rate of return						3.57	%

To the best of my knowledge and belief, the information

contained in this statement is accurate and complete

/s/ S. Brent Bales

S. Brent Bales, Chief Accounting Officer of the Managing Owner

Equinox Fund Management LLC

1775 Sherman Street, Suite 2500

Denver, Colorado 80203

On Behalf of the Frontier Fund—BALANCED SERIES—1

THE FRONTIER FUND FRONTIER SELECT SERIES—1

STATEMENT OF INCOME (LOSS)

FOR THE MONTH ENDED

April 30, 2013

(Unaudited)

	Current Period
INCOME
Realized trading gain (loss)	$	(106,769.32	)
Unrealized trading gain (loss)		763,608.16
Less: Commissions		(7,773.16	)
Less: Trading Fee paid to Managing Owner		(13,986.66	)
Interest income		25,658.59
Total Income		660,737.61
EXPENSES
Broker service fees		55,943.55
Incentive fees		0.00
Management fees		42,998.43
Total Expenses		98,941.98
Net Income (Loss)	$	561,795.63

Statement of Changes in Net Asset Value

	Units			Dollars			$’s per unit
Net asset value, beginning of month		261,329.41867		$	21,393,158.58		$	81.86
Current month additions		17.21000			1,434.62
Current month redemptions		(9,513.62946	)		(787,294.61	)
Net income (loss) for current month					561,795.63			2.20
Net asset value, end of current month		251,833.00000		$	21,169,094.22		$	84.06
		Monthly rate of return						2.68	%

To the best of my knowledge and belief, the information

contained in this statement is accurate and complete

/s/ S. Brent Bales

S. Brent Bales, Chief Accounting Officer of the Managing Owner

Equinox Fund Management LLC

1775 Sherman Street, Suite 2500

Denver, Colorado 80203

On Behalf of the Frontier Fund—FRONTIER SELECT SERIES—1

THE FRONTIER FUND CURRENCY SERIES—1

STATEMENT OF INCOME (LOSS)

FOR THE MONTH ENDED

April 30, 2013

(Unaudited)

	Current Period
INCOME
Realized trading gain (loss)	$	(474,723.97	)
Unrealized trading gain (loss)		457,050.29
Less: Commissions		0.00
Less: Trading Fee paid to Managing Owner		(317.35	)
Interest income		1,497.69
Total Income		(16,493.34	)
EXPENSES
Broker service fees		1,269.55
Incentive fees		0.00
Management fees		0.00
Total Expenses		1,269.55
Net Income (Loss)	$	(17,762.89	)

Statement of Changes in Net Asset Value

	Units			Dollars			$’s per unit
Net asset value, beginning of month		14,097.43170		$	789,015.06		$	55.97
Current month additions		3.29414			179.50
Current month redemptions		(14,100.72584	)		(771,431.67	)
Net income (loss) for current month					(17,762.89	)		(1.33	)
Net asset value, end of current month		0.00000		$	0.00		$	54.64
		Monthly rate of return						-2.37	%

To the best of my knowledge and belief, the information

contained in this statement is accurate and complete

/s/ S. Brent Bales

S. Brent Bales, Chief Accounting Officer of the Managing Owner

Equinox Fund Management LLC

1775 Sherman Street, Suite 2500

Denver, Colorado 80203

On Behalf of the Frontier Fund—CURRENCY SERIES—1

THE FRONTIER FUND FRONTIER HERITAGE SERIES—1

STATEMENT OF INCOME (LOSS)

FOR THE MONTH ENDED

April 30, 2013

(Unaudited)

	Current Period
INCOME
Realized trading gain (loss)	$	37,991.89
Unrealized trading gain (loss)		529,366.57
Less: Commissions		(650.08	)
Less: Trading Fee paid to Managing Owner		(10,810.71	)
Interest income		9,320.75
Total Income		565,218.42
EXPENSES
Broker service fees		43,241.59
Incentive fees		27,908.16
Management fees		21,576.14
Total Expenses		92,725.89
Net Income (Loss)	$	472,492.53

Statement of Changes in Net Asset Value

	Units			Dollars			$’s per unit
Net asset value, beginning of month		160,995.64323		$	16,362,181.14		$	101.63
Current month additions		38.34724			3,986.10
Current month redemptions		(5,319.21543	)		(551,965.08	)
Net income (loss) for current month					472,492.53			2.96
Net asset value, end of current month		155,714.78000		$	16,286,694.69		$	104.59
		Monthly rate of return						2.91	%

To the best of my knowledge and belief, the information

contained in this statement is accurate and complete

/s/ S. Brent Bales

S. Brent Bales, Chief Accounting Officer of the Managing Owner

Equinox Fund Management LLC

1775 Sherman Street, Suite 2500

Denver, Colorado 80203

On Behalf of the Frontier Fund—FRONTIER HERITAGE SERIES—1

THE FRONTIER FUND WINTON SERIES—1

STATEMENT OF INCOME (LOSS)

FOR THE MONTH ENDED

April 30, 2013

(Unaudited)

	Current Period
INCOME
Realized trading gain (loss)	$	153,664.77
Unrealized trading gain (loss)		1,355,567.65
Less: Commissions		(2,633.59	)
Less: Trading Fee paid to Managing Owner		(20,298.63	)
Interest income		25,025.21
Total Income		1,511,325.41
EXPENSES
Broker service fees		81,184.77
Incentive fees		130,336.47
Management fees		70,099.11
Total Expenses		281,620.35
Net Income (Loss)	$	1,229,705.06

Statement of Changes in Net Asset Value

	Units			Dollars			$’s per unit
Net asset value, beginning of month		221,659.10792		$	30,262,765.61		$	136.53
Current month additions		110.02596			15,481.75
Current month redemptions		(2,187.26003	)		(304,796.32	)
Net income (loss) for current month					1,229,705.06			5.57
Net asset value, end of current month		219,581.87000		$	31,203,156.10		$	142.10
		Monthly rate of return						4.08	%

To the best of my knowledge and belief, the information

contained in this statement is accurate and complete

/s/ S. Brent Bales

S. Brent Bales, Chief Accounting Officer of the Managing Owner

Equinox Fund Management LLC

1775 Sherman Street, Suite 2500

Denver, Colorado 80203

On Behalf of the Frontier Fund—WINTON SERIES—1

THE FRONTIER FUND BALANCED SERIES

STATEMENT OF INCOME (LOSS)

FOR THE MONTH ENDED

April 30, 2013

(Unaudited)

	Current Period
INCOME
Realized trading gain (loss)	$	370,330.21
Unrealized trading gain (loss)		8,424,581.60
Less: Commissions		(197,283.34	)
Less: Trading Fee paid to Managing Owner		(139,669.89	)
Interest income		20,110.52
Total Income		8,478,069.10
EXPENSES
Trading fees		0.00
Broker service fees		342,626.89
Incentive fees		1,396,969.59
Management fees		156,016.67
Total Expenses		1,895,613.15
Net Income (Loss)	$	6,582,455.95

Statement of Changes in Net Asset Value

	Units			Dollars			Aggregate Net Asset Value per unit*
Net asset value, beginning of month		1,496,535.93535		$	182,215,835.17		$	121.76
Current month additions		712.66334			75,223.77
Current month redemptions		(56,738.41062	)		(6,972,594.00	)
Net income (loss) for current month					6,582,456.15			4.52
Net asset value, end of current month		1,440,510.19000		$	181,900,921.09		$	126.28
		Monthly rate of return						3.71	%

* Please see your specific Class Statement of Income (Loss) for your specific unit value.

To the best of my knowledge and belief, the information

contained in this statement is accurate and complete

/s/ S. Brent Bales

S. Brent Bales, Chief Accounting Officer of the Managing Owner

Equinox Fund Management LLC

1775 Sherman Street, Suite 2500

Denver, Colorado 80203

On Behalf of the Frontier Fund—BALANCED SERIES

THE FRONTIER FUND FRONTIER SELECT SERIES

STATEMENT OF INCOME (LOSS)

FOR THE MONTH ENDED

April 30, 2013

(Unaudited)

	Current Period
INCOME
Realized trading gain (loss)	$	(121,616.54	)
Unrealized trading gain (loss)		869,982.94
Less: Commissions		(8,853.30	)
Less: Trading Fee paid to Managing Owner		(15,931.22	)
Interest income		29,225.62
Total Income		752,807.50
EXPENSES
Trading fees		0.00
Broker service fees		55,943.55
Incentive fees		0.00
Management fees		48,976.70
Total Expenses		104,920.25
Net Income (Loss)	$	647,887.25

Statement of Changes in Net Asset Value

	Units			Dollars			Aggregate Net Asset Value per unit*
Net asset value, beginning of month		289,557.25244		$	24,338,864.96		$	84.06
Current month additions		17.21000			1,434.62
Current month redemptions		(10,304.03635	)		(871,273.86	)
Net income (loss) for current month					647,887.25			2.30
Net asset value, end of current month		279,270.43000		$	24,116,912.97		$	86.36
		Monthly rate of return						2.74	%

* Please see your specific Class Statement of Income (Loss) for your specific unit value.

To the best of my knowledge and belief, the information

contained in this statement is accurate and complete

/s/ S. Brent Bales

S. Brent Bales, Chief Accounting Officer of the Managing Owner

Equinox Fund Management LLC

1775 Sherman Street, Suite 2500

Denver, Colorado 80203

On Behalf of the Frontier Fund—FRONTIER SELECT SERIES

THE FRONTIER FUND CURRENCY SERIES

STATEMENT OF INCOME (LOSS)

FOR THE MONTH ENDED

April 30, 2013

(Unaudited)

	Current Period
INCOME
Realized trading gain (loss)	$	(505,990.19	)
Unrealized trading gain (loss)		487,197.70
Less: Commissions		0.00
Less: Trading Fee paid to Managing Owner		(337.46	)
Interest income		1,592.85
Total Income		(17,537.10	)
EXPENSES
Trading fees		0.00
Broker service fees		1,269.55
Incentive fees		0.00
Management fees		0.00
Total Expenses		1,269.55
Net Income (Loss)	$	(18,806.65	)

Statement of Changes in Net Asset Value

	Units			Dollars			Aggregate Net Asset Value per unit*
Net asset value, beginning of month		14,753.22438		$	836,403.93		$	56.69
Current month additions		3.29414			179.50
Current month redemptions		(14,756.51852	)		(817,776.78	)
Net income (loss) for current month					(18,806.65	)		(1.27	)
Net asset value, end of current month		0.00000		$	0.00			55.42
		Monthly rate of return						-2.24	%

* Please see your specific Class Statement of Income (Loss) for your specific unit value.

To the best of my knowledge and belief, the information

contained in this statement is accurate and complete

/s/ S. Brent Bales

S. Brent Bales, Chief Accounting Officer of the Managing Owner

Equinox Fund Management LLC

1775 Sherman Street, Suite 2500

Denver, Colorado 80203

On Behalf of the Frontier Fund—CURRENCY SERIES

THE FRONTIER FUND FRONTIER HERITAGE SERIES

STATEMENT OF INCOME (LOSS)

FOR THE MONTH ENDED

April 30, 2013

(Unaudited)

	Current Period
INCOME
Realized trading gain (loss)	$	46,842.30
Unrealized trading gain (loss)		653,331.84
Less: Commissions		(802.41	)
Less: Trading Fee paid to Managing Owner		(13,346.33	)
Interest income		11,505.60
Total Income		697,531.00
EXPENSES
Trading fees		0.00
Broker service fees		43,241.59
Incentive fees		34,448.14
Management fees		26,637.14
Total Expenses		104,326.87
Net Income (Loss)	$	593,204.13

Statement of Changes in Net Asset Value

	Units			Dollars			Aggregate Net Asset Value per unit*
Net asset value, beginning of month		190,237.35514		$	20,182,606.70		$	106.09
Current month additions		38.34724			3,986.10
Current month redemptions		(5,711.26407	)		(603,831.03	)
Net income (loss) for current month					593,204.13			3.23
Net asset value, end of current month		184,564.44000		$	20,175,965.90		$	109.32
		Monthly rate of return						3.04	%

* Please see your specific Class Statement of Income (Loss) for your specific unit value.

To the best of my knowledge and belief, the information

contained in this statement is accurate and complete

/s/ S. Brent Bales

S. Brent Bales, Chief Accounting Officer of the Managing Owner

Equinox Fund Management LLC

1775 Sherman Street, Suite 2500

Denver, Colorado 80203

On Behalf of the Frontier Fund—FRONTIER HERITAGE SERIES

THE FRONTIER FUND WINTON SERIES

STATEMENT OF INCOME (LOSS)

FOR THE MONTH ENDED

April 30, 2013

(Unaudited)

	Current Period
INCOME
Realized trading gain (loss)	$	208,352.81
Unrealized trading gain (loss)		1,837,028.56
Less: Commissions		(3,569.58	)
Less: Trading Fee paid to Managing Owner		(27,510.36	)
Interest income		33,916.21
Total Income		2,048,217.64
EXPENSES
Trading fees		0.00
Broker service fees		81,184.77
Incentive fees		176,620.91
Management fees		95,003.88
Total Expenses		352,809.56
Net Income (Loss)	$	1,695,408.08

Statement of Changes in Net Asset Value

	Units			Dollars			Aggregate Net Asset Value per unit*
Net asset value, beginning of month		286,082.12096		$	40,990,191.21		$	143.28
Current month additions		110.02596			15,481.75
Current month redemptions		(2,842.45642	)		(416,962.21	)
Net income (loss) for current month					1,695,408.08			5.95
Net asset value, end of current month		283,349.68665		$	42,284,118.83		$	149.23
		Monthly rate of return						4.15	%

* Please see your specific Class Statement of Income (Loss) for your specific unit value.

To the best of my knowledge and belief, the information

contained in this statement is accurate and complete

/s/ S. Brent Bales

S. Brent Bales, Chief Accounting Officer of the Managing Owner

Equinox Fund Management LLC

1775 Sherman Street, Suite 2500

Denver, Colorado 80203

On Behalf of the Frontier Fund—WINTON SERIES