I once asked Reggae legend Daver Barker to sign a record for me. Problem was, he used the same pen he just did to sign an album sleeve, a finger-thick felt pen and ruined the label. It now looks like a 3 year old scribbled on it. Many years ago I bought a copy of Mike & Ray on Giant, described as "heavy wol". Turned it it's signed by both of them. Apart from that I have three albums signed by Terry Callier. One of my alltime favourite singers. Still miss him....