Just about anything that's real. Including (but not limited to) work by (in no particular order):
The Who,
My stuff,
Muddy Waters,
The Beatles,
Ludwig van Beethoven,
Stephen Stills,
Old-School Southern Gospel,
Freddie King,
Ronnie Wood,
Mel Torme,
Jerry Garcia,
Pink Floyd,
Skeeter Davis,
Yes,
Old-School Blues,
Donna Frost,
Paco de Lucía,
Chet Atkins,
Joe Jackson,
Wolfgang Amadeus Mozart,
The Allman Brothers Band,
Casting Crowns,
Todd Rundgren,
Rolling Stones,
Gioacchino Rossini,
Hubert Laws,
Kate Bush,
'70's Funk,
Herbert von Karajan,
Phil Lesh,
Crosby, Stills & Nash,
Pete Townshend,
Motown,
60's & 70's British Rock (Faces, Led Zeppelin, Deep Purple, Bad Company, ELO, etc.)