'Concierto de Aranjuez' w/ Pablo de Lucia on spanish guitar, since it's romantic and noble like chess and it's 24 minutes long, just about enough time to let my opponent decide to resign (or me to resign if things aren't going so well). Also, various Psychill/Psybient mixes that last about an hour. 'Bolero' is also nice for chess--about 17 minutes, repetitious but unobtrusive, coming to a wonderful crescendo right in timing with my mating attack!!
'Goats like humans' might be worth trying for Bleats, er, I mean Blitz chess!
Sorry didn't mean to get your goat.