If anyone is interested, here's a video that shows how I used my Alpha to play all the synth parts of San Jacinto in a show a few weeks ago. It was an absolute delight to use it for this song.
http://www.youtube.com/watch?v=PG4R8VKdxRk
Starting around 3:46, you can hear a three part loop that is being controlled from the eigenharp, a little later, the analog vintage strings are being played directly on the eigenharp. Finally, at the end of the song, there's a low bass moog and a higher octave steam pipe solo, both being played on the eigenharp, which at this point is actually visible in the video.