January 30, 2008
Overture Acquisition Corp.
c/o Maples Corporate Services Limited
PO Box 309
Grand Cayman KY1-1104
Re: Initial Public Offering
This letter is being delivered to you in accordance with the Underwriting Agreement (the “ Underwriting
Agreement ”) entered into by and between Overture Acquisition Corp., a Cayman Islands exempted limited
liability company (the “ Company ”), and J.P. Morgan Securities Inc., as representative (the “ Representative ”)
of the several Underwriters named in Schedule I thereto (the “ Underwriters ”), relating to an underwritten initial
public offering (the “ IPO ”) of the Company’s units (the “ Units ”), each Unit consisting of one ordinary share of
the Company, par value $0.0001 per share (the “ Ordinary Share ”), and one warrant to purchase one
Ordinary Share (each, a “ Warrant ”). Certain capitalized terms used herein are defined in paragraph 18 hereof.
In order to induce the Company and the Underwriters to enter into the Underwriting Agreement and to
proceed with the IPO, and in recognition of the benefit that such IPO will confer upon the undersigned as a
shareholder of the Company, and for other good and valuable consideration, the receipt and sufficiency of which
are hereby acknowledged, the undersigned hereby agrees with the Company as follows:
1. If the Company solicits approval of its shareholders of an Initial Business Combination, the undersigned
will vote all shares of Founders’ Ordinary Shares owned by him, her or it in accordance with the majority of the
votes cast by the holders of the IPO Shares.
2. In the event that the Company fails to consummate an Initial Business Combination within twenty-four
(24) months from the effective date (“ Effective Date ”) of the registration statement relating to the IPO, the
undersigned, in his or her capacity as set forth in paragraph 10, will, as promptly as possible, take all reasonable
actions within his or her power to cause the