The tension-building section that precedes a drop, layering rising elements until release.
Definition
The buildup is the section of a trance track that creates tension and anticipation immediately before a drop. Producers use rising elements — white-noise sweeps, pitched-up drum rolls, synth filter sweeps, ascending arpeggios, vocal builds — to push the energy steadily upward. Snare or hat patterns often double in speed as the buildup progresses, and a kick may drop out entirely so that the listener is held in mid-air. The buildup is one of trance's signature architectural devices: a deliberate suspension that makes the eventual drop hit harder by contrast. Buildups in modern uplifting and progressive trance typically run 16, 32, or 64 bars.