Build-up Generator
Make the snare roll that speeds up into the drop, with a white-noise riser, a kick change and a filter sweep, all locked to your tempo. Take it away as MIDI, automation and a ready-made WAV riser.
Playback loops the build and the first bar of the drop, so you hear it land.
Where the roll speeds up
Sounds to load your MIDI into
Supersaw Essentials: 25 free trance presets for Vital, the free synth. Leads, plucks, pads and gated stabs, voiced for every tool on this site.
How a trance build-up works
A build-up turns tension into a release. The snare roll is the engine: it starts on quarter notes, doubles to 8ths, then 16ths, and finishes on 32nds just before the drop. Each step up feels like the track is speeding up even though the tempo never changes. The velocity climbs with it, so the roll gets louder as well as faster.
Around the roll, three more things build the tension. A white-noise riser sweeps up in pitch and volume. A filter sweep opens the synths from muffled to bright. And the kick either keeps pounding, doubles up to 8ths in the last bar, or drops out entirely so the drop hits harder when it comes back. Many classic builds end with a beat of silence: everything stops for one beat, then the drop lands with a crash.
Using the export
- Snare roll (drum rack): every hit on D1 (38) with rising velocity. Drop it on a drum rack or snare sampler.
- Snare roll (rising pitch): the same roll starting on C3, with each hit's note climbing by the pitch rise you chose. Put it on a sampler set to follow the keyboard and the snare pitches up as it rolls.
- Kick and crash: the kick pattern on C1, and a crash on C#2 at the first beat of the drop.
- Filter sweep (CC74) and riser volume (CC11): automation clips you can map to a synth's cutoff or a channel's volume.
- Full build: every part on its own track, plus the first bar of the drop.
The Riser WAV is a white-noise sweep rendered at your tempo, so it lines up with the build when you drop it in. The Whole build WAV renders the roll, kick, riser and crash together: handy as a reference or to resample.
Questions
How long should a trance build-up be?
Eight bars is the most common, after a breakdown of 16 or 32 bars. Sixteen-bar builds suit festival tracks and long breakdowns; four bars work as a quick lift between sections.
What's the difference between the roll styles?
Classic steps from quarters to 8ths to 16ths to 32nds. Late rush stays on 8ths for longer and saves the speed for the end. Triplet finish adds 16th triplets before the 32nds. Smooth accelerates continuously instead of in steps, like a hand-played roll.
Can I use the WAV riser in my tracks?
Yes. It's generated fresh in your browser from white noise, and it's yours to use in released music.