Queen drummer Roger Taylor has signed five special edition CDs in aid of Cornwall's Phoenix Stroke Appeal.
Rock star Mr Taylor, who grew up in Truro and has a home in Cornwall, did the favour for the charity's chairman Rik Evans.
The CDs, which are being auctioned one-by-one on eBay until mid-December, will, it is hoped, raise hundreds of pounds for the Cornish charity.
"Roger and I are old friends," said Rik, who agreed to chair the £500,000 appeal after learning first hand how stroke affects families.
"We hope these great CDs will make a lot for our charity, and provide lots of stroke equipment for people in Cornwall."
The Phoenix Stroke Appeal aims to raise £500,000 to improve stroke services Cornwall. The money will be shared between the Royal Cornwall Hospital at Truro and the community hospitals at Bodmin and Camborne/Redruth.
Its hoped the CDs will raise abound £100 each.
For more information or to make an offer before the CDs go up for online auction, email firstname.lastname@example.org or call 01208 841453.