REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Trustees of First Trust Exchange-Traded Fund and
Shareholders of First Trust Dow Jones Select MicroCapSM Index Fund:

In planning and performing our audit of the financial statements of
First Trust Dow Jones Select MicroCapSM Index Fund ("Fund") as of
December 31, 2005 and for the period September 30, 2005 (inception)
through December 31, 2005 (on which we have issued our report dated
February 17, 2006), 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 December 31, 2005.

This report is intended solely for the information and use of management
and the Board of Trustees of First Trust Exchange-Traded Fund, on behalf
of First Trust Dow Jones Select MicroCapSM Index Fund and the Securities
and Exchange Commission and is not intended to be and should not be used
by anyone other than these specified parties.

February 17, 2006