Veteran rocker Keith Richards is still hopeful of teaming up with old pal Sir Paul McCartney for a long-overdue collaboration after writing a song together in 2006.
The Rolling Stones star details the unexpected meeting in his memoir, Life, revealing he bumped into MCCartney while they were both on vacation.
He writes, "We were really pleased to see each other. We fell straight in talking about the past, talking about songwriting... We started composing a song together, a MCCartney/Richards number whose lyrics were pinned to my wall for many weeks."
The track remains unrecorded five years on, but Richards insists he still intends to complete the song one day.
He says, "The thought is there but the actual deed is yet to actually be done."
Meanwhile, Richards is planning more non-Stones activity for 2011 - he has regrouped his X-pensive Winos band and has started work on a new album.
The guitarist and Winos drummer Steve Jordan last recorded an album together 20 years ago.