Sunday Synth Jam: This video, via tubesockor, captures a live performance of a Commodore 64 SID classic: Delta, by Rob Hubbard, from 1987.

tubesockor notes that Hubbard’s theme is very similar to the classic Philip Glass Koyaanisqatsi main theme. 

Three Teenage Engineering Pocket Operators are used:

• PO-28 Robot: main lead, blips and drums.
• PO-14 Sub: bass and extra percussion.
• PO-16 Factory: secondary lead.

Both leads are played live, but some special tricks had to be done in order to overcome the “fixed scale” of the PO’s, in this song that actually uses two scales. The PO-16 runs a few empty patterns where some notes on certain occasions are raised a half step. That way the range gets much wider.

via Per Nordenqvist