I was really trying not to go through any major veins (Beatles/Rolling Stones) but I think I bit off more than I could chew

I tried Eddie Murphy (singer/songwriter) and Dropkick Murphys (Boston Bar Punks).. and awaaaaaay we go..

Eddie Murphy did a Stevie Wonder Song
Stevie Wonder did a duet w/Paul McCartney
Johnny Cash covered a Beatles song (in which Paul McCartney played) on his recent covers album
Social Distortion covered Ring of Fire and were influenced by Johnny Cash
Dropkick Murphys are very influenced by Social Distortion

Lotsa influence, lotsa covers, two godamned murphys