While I may love jazz when it’s dark and moody, and find that it gets darker and moodier when you have fewer people playing it at the same time, solo piano collections have ironically never really grabbed me. But by adding some sound effects here are there, sometimes to great effect, Jon Balke’s Warp (CD, digital) has, for the most part, caught my attention. It didn’t keep it the whole time, but it certainly caught it.