Trackmo
The demoscene's seamless long form: a demo that streams straight off the disk's tracks while the effects roll.
A trackmo (from "track" + "demo") loads data directly from the disk's tracks with its own fast loader, bypassing the Amiga's sluggish filesystem. That let the demo stream new effects, graphics and music with no pauses or loading screens — one unbroken ride instead of the early demos' menu of disconnected parts.
The form peaked around 1990 with groups like Spaceballs and Melon Dezign and became the demoscene's answer to the feature film. Syncing effect changes to the music while loading the next part off disk in time demanded cycle-level choreography — half the feat was in the loader itself.