In an email to Computerworld, Sharp said are putting together the compilation CD to raise awareness about his case and to hopefully get Obama's attention. The CD, which is slated to be released next month, will include Gilmour's recording, along with songs from other artists, whose identities have yet to be disclosed, she added.

Sharp noted that the CD will be available for download, and that her son's supporters are looking to distribute in retail stores as well.

Earlier this month, a musical protest outside the U.S. embassy in London. The protest was timed to correspond to Obama's arrival at the G20 summit of world leaders held in London.

McKinnon has described in detail how he hacked into the U.S. military computers at computer security conferences in London.

The U.S. government alleges that McKinnon caused US$900,000 in damages to computers in 14 states, and that he caused the shutdown of critical military networks shortly after the Sept. 11, 2001, terrorist attacks. He faces a sentence of 60 years or more in the U.S.