I know Tim has covered Ralph in the past (Silence of a Candle) but how about this gem. You can definitely tell where Tim got a few of his YAMS chops from.
The cool thing about ralph is that he also plays piano like Bill Evans. He's incredible. I love his work with Oregon too. I actually just met his bandmate Glen Moore the Bass player in Oregon. He was a adjudicator at my bass jury. He's a nice guy and great player as well. Ralph is someone to check out if you're into guitar.