EXHIBIT 32.1
CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY
ACT OF 2002
In connection with the Quarterly Report of Sirius XM Radio Inc. (the “Company”) on Form 10-Q
for the period ended June 30, 2008 as filed with the Securities and Exchange Commission on the date
hereof (the “Report”), I, Mel Karmazin, Chief Executive Officer of the Company, certify, pursuant
to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002,
that:
(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the
Securities Exchange Act of 1934; and
(2) The information contained in the Report fairly presents, in all material respects,
the financial condition and results of operations of the Company.
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By: |
/s/ Mel Karmazin
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Mel Karmazin |
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Chief Executive Officer
(Principal Executive Officer) |
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August 11, 2008
A signed original of this written statement required by Section 906, or other document
authenticating, acknowledging, or otherwise adopting the signature that appears in typed form
within the electronic version of this written statement required by Section 906, has been provided
to the Company and will be retained by the Company and furnished to the Securities and Exchange
Commission or its staff upon request.