<p>That is a list too long to answer. But, just to touch on a few, The Beatles, Bradford Blues Band, Eric Clapton, The Stones, Flatt &amp; Scruggs, The Outlaws, The Sidemen, Leon Russell, Leon Redbone, Kings of Leon, Leon Brauschwietz, Delbert McClinton, friends in Nashville, Springsteen, Led Zeppelin, Sinatra, Dean Martin, Johnny Cash, Motown music, Old Time Music, Walt Harper, etc. etc.</p>