The White Stripes released a cover version of Tegan and Sara's song "Walking with a Ghost" on iTunes in November 2005. The song was later released in December as the "Walking with a Ghost" EP featuring four other live tracks. In October 2006, it was announced on the official White Stripes website that there would be an album of avant-garde orchestral recordings consisting of past music written by Jack called "Aluminium". The album was made available for pre-order on November 6, 2006, to great demand from the band's fans; the LP version of the project sold out in a little under a day. The project was conceived by Richard Russell, founder of XL Recordings, who co-produced the album with Joby Talbot. It was recorded between August 2005 and February 2006 at Intimate Studios in Wapping, London using an orchestra. Before the album went out of print, it was available exclusively through the "Aluminium" website in a numbered limited edition of 3,333 CDs with 999 LPs.