"Keystroke Mountain" [5.7 MB .mp3]
Grand piano + "urban beats" -- that's all you need to know.
The beats are all tweaked, using FX presets pretty much exactly as intended.
A nice thing about having a PC with a little more speed and memory is I can play sampled piano with all the convolution settings and no overload spasms.
The undulating granular sounds during the drum break were made a couple of years ago using Reaktor Photone and analog filter sweeps.