- Why does the kick sound like the bassline?
- Because it is one. Overdriving a 909 kick stretches and flattens its tail into a square wave whose fundamental sits around 50–60 Hz and holds until the next beat arrives. Writing "kick doubles as the bass, no separate bass part" gets you far closer than simply asking for a hard kick.
- How do I stop a whole track being one timbre?
- Move the kick's pitch. Walk it through three or four notes in key, change the distortion amount and filter opening between sections, and use eighth-note rolls as transitions. A single sound can carry an arrangement once you treat it as a melodic instrument.
- Gabber or hardstyle — which should I ask for?
- Ask for hardstyle if you want euphoric leads, a reverse bass and a clear drop at around 150 BPM. Ask for gabber if you want 160–200 BPM, a clipped kick as the only real voice, and no melodic payoff at the end of the build.