The album also features instrumentation by Julian Koster to back the spoken word recording by Brian Dewan.

Koster was under contract with Merge Records to produce another album of music, but wanted to produce a concept album focused more on story and sound effects than necessarily music, inspired by Sgt.

[2] It never received an official mass-release per se,[3] as Koster felt the material could not be released through his regular record label.

Koster said that "an official release shall be arranged for, but it's not yet as, in truth, I've been too wrapped up in making new things."

Koster's podcast The Orbiting Human Circus (of the Air) announced in May 2017 that they would be releasing a four-part special beginning on May 10, 2017 titled "The 2nd Imaginary Symphony", which was revealed to be the entire Music Tapes album divided into four parts, with the context being it is a mysterious record found in Paris that is broadcast on "Platypus Eve."