Jazz, blues, hokum, western swing, and most anything else from before WW2.
Updated at 2013/3/5 . Special 180 tracks featuring 48 Famous Piano Trios tunes only , such as Bill evans Trio, Bud Powell Trio, Keith Jarret Trio, McCoy Tyner Trio etc. Playlist is available at http://n-shuhei.net/Music/Piano_Trio_130304.htm
Rock & Blues rotation - Good Night with Layla