The 5 audio tracks included with this download:

Sonar 1–Soundtrack: the soundtrack notated in the piece that the trombonist has to duet with (inanimately).

Sonar 2–Tromba baile: is for an open-ended improv 2nd movement to play after the first (notated) movement, optionally.

Sonar 3–glossary: explains what the sounds, to let the trombonist think about how to best recreate them live. Sounds are all derived from trombone player warming up and playing actual piece. Organic.

Sonar 4–Soundtrack (Limited): Same soundtrack as track 1, but put through a Waves L1 limiter. Useful for performances in noisy rooms, but lacking the nuance and dynamic range.

Sonar 5–Tromba baile (Limited): Same as track 2, but sent through a limiter.

Recording of the piece performed by Chris Washburne: