Alliancebernstein 10-Q 2009 Q2 Quarterly report

Exhibit 15.1

July 30, 2009

Securities and Exchange Commission

100 F Street, N.E.

Washington, DC 20549

Registration Statements on Form S-3 (No. 333-64886) and on Form S-8 (No. 333-47192).

Commissioners:

We are aware that our reports dated July 30, 2009 on our review of interim financial information of AllianceBernstein L.P. (the “Company”) for the three-month and six-month periods ended June 30, 2009 and 2008 and included in the Company’s quarterly report on Form 10-Q for the quarter ended June 30, 2009 are incorporated by reference in its Registration Statements referred to above.

Very truly yours,

/s/ PricewaterhouseCoopers LLP

New York, New York