When Fred won 2nd place in Keyboard Magazine's Keyboards that Rawk contest with his song "Into You", he got a free CASIO PX-130 keyboard. This pretty piece by Chopin is one of the pre-recorded demo pieces it plays, so I don't have to actually learn to play it myself. ;-) This recording I posted of Chopin Nocturne in E flat major, Op. 9, No. 2 (video found on You Tube) was performed by pianist Arthur Rubenstein in 1965, and I think it's the perfect interpretation of it.