REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

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BURKE TITLE TREASURER EX-99.77B ACCT LTTR 2 myld77b.htm REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Shareholders and Board of Directors of BlackRock MuniYield Fund, Inc.:

In planning and performing our audit of the financial statements of BlackRock MuniYield Fund, Inc. (the “Fund”), as of and for the year ended October 31, 2007, in accordance with the standards of the Public Company Accounting Oversight Board (United States), we considered its internal control over financial reporting, including control activities for safeguarding securities, as a basis for designing our auditing procedures for the purpose of expressing our opinion on the financial statements and to comply with the requirements of Form N-SAR, but not for the purpose of expressing an opinion on the effectiveness of the Fund’s internal control over financial reporting. Accordingly, we express no such opinion.

The management of the Fund is responsible for establishing and maintaining effective internal control over financial reporting. In fulfilling this responsibility, estimates and judgments by management are required to assess the expected benefits and related costs of controls. A fund’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. Such internal control includes policies and procedures that provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of a fund's assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions or that the degree of compliance with the policies or procedures may deteriorate.

A control deficiency exists when the design or operation of a control does not allow management or employees, in the normal course of performing their assigned functions, to prevent or detect misstatements on a timely basis. A significant deficiency is a control deficiency, or combination of control deficiencies, that adversely affects the fund's ability to initiate, authorize, record, process, or report external financial data reliably in accordance with generally accepted accounting principles such that there is more than a remote likelihood that a misstatement of the fund's annual or interim financial statements that is more than inconsequential will not be prevented or detected. A material weakness is a significant deficiency, or combination of significant deficiencies, that results in more than a remote likelihood that a material misstatement of the annual or interim financial statements will not be prevented or detected.

Our consideration of the Fund’s internal control over financial reporting was for the limited purpose described in the first paragraph and would not necessarily disclose all deficiencies in internal control that might be significant deficiencies or material weaknesses under standards established by the Public Company Accounting Oversight Board (United States). However, we noted no deficiencies in the Fund’s internal control over financial reporting and its operation, including controls for safeguarding securities, that we consider to be a material weakness, as defined above, as of October 31, 2007.

This report is intended solely for the information and use of management and the Board of Directors of BlackRock MuniYield Fund, Inc. and the Securities and Exchange Commission and is not intended to be and should not be used by anyone other than these specified parties.

/s/ Deloitte & Touche LLP

Princeton, New Jersey

December 26, 2007

EX-99.77O RULE 10F-3 3 myfnd77o.htm 10F-3 TRANSACTIONS

BlackRock MuniYield Fund, Inc.

FILE #811-06414

ATTACHMENT 77O

TRADE DATE	DESCRIPTION OF SECURITY	ISSUE SIZE	AMOUNT PURCHASED	LIST OF UNDERWRITERS
1/24/07	TOBACCO SETTLEMENT FING CORP NJ	3,622,208,082	10,000,000	Bear, Stearns & Co. Inc.; Citigroup; JPMorgan; Merrill Lynch & Co.; UBS Investment Bank; A.G. Edwards & Sons, Inc.; Alta Capital Group, LLC; Apex Pryor Securities; Banc of America Securities LLC; BB&T Capital Markets; Butler Wick & Co., Inc.; Cabrera Capital Markets, Inc.; Commerce Capital Markets, Inc.; Ferris Baker Watts, Incorporated; First Albany Capital Inc.; George K. Baum & Company; The GMS Group, LLC; Goldman, Sachs & Co.; Grigsby & Associates, Inc.; J.P. McGowan & Company, Inc.; Jackson Securities, LLC; Janney Montgomery Scott LLC; KeyBanc Capital Markets; LaSalle Financial Services, Inc.; Loop Capital Market, LLC; Morgan Keegan & Company, Inc.; Morgan Stanley; NW Capital Markets Inc.; Piper Jaffray & Co.; Popular Securities, Inc.; Powell Capital Markets, Inc.; Prager, Sealy & Co., LLC; Ramirez & Co., Inc.; Raymond James & Associates, Inc.; RBC Capital Markets; Roosevelt & Cross Incorporated; Siebert Brandford Shank & Co., L.L.C.; Southwest Securities; Sterne Agee & Leach, Inc.; Sturdivant & Co.; Wachovia Bank, NA

BlackRock MuniYield Fund, Inc.

FILE #811-06414

ATTACHMENT 77O

TRADE DATE

DESCRIPTION OF SECURITY

ISSUE SIZE

AMOUNT PURCHASED

LIST OF UNDERWRITERS

2/08/07

DALLAS TEX AREA RAPID TRAN SALES T

770,270,000

4,800,000

Goldman, Sachs & Co.; Siebert Brandford Shank & Co., LLC; Banc of America Securities LLC; Popular Securities; First Albany Capital Inc.; Merrill Lynch & Co.; Morgan Keegan & Company, Inc.; Ramirez & Co., Inc.; Southwest Securities; Walton, Johnson & Company

Stanley & Co. Incorporated; BNP Paribas Securities Corp.; HSBC Securities (USA) Inc.; The Royal Bank of Scotland plc; ABN AMRO Rothschild LLC; Barclays Capital Inc.; Credit Suisse Securities (USA) LLC; UBS Securities LLC; Scotia Capital (USA) Inc.; Bear, Stearns & Co. Inc.; Calyon Securities (USA) Inc.; Comerica Securities, Inc.; Dresdner Kleinwort Wasserstein Securities LLC; Harris Nesbitt Corp.; BNY Capital Markets, Inc.; Fortis Securities LLC; PNC Capital Markets, Inc.; Wells Fargo Securities, LLC

2/16/07

PUERTO RICO COMWLTH HWY & TRANSN A

2,184,860,553

1,000,000

Citigroup; Goldman, Sachs & Co.; RBC Capital Markets; Banc of America Securities LLC; BBVAPR MSD; JP Morgan; Lehman Brothers; Merrill Lynch & Co.; Morgan Stanley; Popular Securities; Raymond James & Associates, Inc.; Samuel A. Ramirez & Co.; Santander Securities; UBS Investment Bank; Wachovia Bank, National Association

BlackRock MuniYield Fund, Inc.

FILE #811-06414

ATTACHMENT 77O

TRADE DATE	DESCRIPTION OF SECURITY	ISSUE SIZE	AMOUNT PURCHASED	LIST OF UNDERWRITERS
3/08/07	GOLDEN ST TOB SECURITIZATION CORP	4,446,826,391	3,300,000	Bear, Stearns & Co. Inc.; Goldman, Sachs & Co.; Citigroup; First Albany Capital Inc.; M.R. Beal & Company; A.G. Edwards; Banc of America Securities LLC; E.J. De La Rosa & Co., Inc.; Fidelity Capital Markets Services; Great Pacific Securities, Inc.; Jackson Securities; JPMorgan; Lehman Brothers; Loop Capital Markets, LLC; Merrill Lynch & Company; Morgan Keegan and Co., Inc.; Morgan Stanley; Prager, Sealy & Company, LLC; Ramirez & Co., Inc.; RBC Capital Markets; Siebert Brandford Shank & Co., LLC; Southwest Securities; Stone & Youngberg, LLC; UBS Investment Bank
04/20/07	PUERTO RICO ELEC PWR AUTH PWR REV	1,943,565,000	$7,100,000	JPMorgan; UBS Investment Bank; Wachovia Bank, National Association; Banc of America Securities LLC; BBVAPR MSD; Citigroup; Goldman, Sachs & Co.; Lehman Brothers; Merrill Lynch & Co.; Morgan Stanley; Popular Securities; RBC Capital Markets; Samuel A. Ramirez & Co.; Santander Securities
06/21/07	CALIFORNIA ST FOR PREVIOUS ISSUES	2,500,000,000.00	$11,335,000	Citigroup Global Markets Inc., Banc of America Securities LLC, E.J. De La Rosa & Co., Inc., Fidelity Capital Markets Services, Alamo Capital, ALTA CAPITAL GROUP LLC, Backstrom McCarley Berry & Co.,LLC, Bear, Stearns & Co. Inc., Comerica Securities, Crocker Securities LLC, Goldman, Sachs & Co.,Great Pacific Securities Inc., Grigsby & Associates, Inc., J.P. Morgan Securities Inc., Henderson Capital Partners, Inc., Lehman Brothers, Merrill Lynch & Co., Morgan Stanley & Co. Incorporated, RBC Capital Markets,Ramirez & Co., Inc., Siebert Brandford Shank & Co., Stone & Youngberg LLC, UBS Securities LLC,Wedbush Morgan Securities, Wells Fargo Brokerage Services LLC.
07/13/07	Puerto Rico Sales Tax Financing Corp.	2,667,603,572.60	55,216,000,000	Goldman, Sachs & Co., Lehman Brothers A.G. Edwards & Sons, Inc.,Banc of America Securities LLC, BBVAPR MSD, Bear, Stearns & Co. Inc., Citigroup Global Markets Inc., First Albany Capital Inc., J.P. Morgan Securities, Inc., Loop Capital Markets, Merrill Lynch & Co., Morgan Stanley & Co. Incorporated., Oriental Financial Services, Popular Securities, Inc., RBC Capital Markets, Samuel A. Ramirez & Co., Inc., Santander Securities, UBS Securities LLC, Wachovia Bank, National Association

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