David Gilmour CDR/digital single released: 29 May 2006.
This single was first "released" to people attending David Gilmour's 3 concerts in Royal Albert Hall in May 2006. The audience was given an empty CD box with cover art for "Smile" and directions to download the single from iTunes. The idea was that they should burn it to a recordable CD (CDR). Smile had already been released the concert film: David Gilmour in Concert and on the album On An Island. The "B-side", Island Jam, was previously unreleased.