Bass / Club · 2025
The Fastness
Mixes well with this track
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Every recommendation is scored across six dimensions — harmonic key, BPM, energy, texture, mood and vocal compatibility — then refined by 5,000 community-rated transitions from real DJs. That's why each match has a chemistry number and a reason, not just a list of tracks in the same key.
About this track.
The Fastness by Sister Zo is a bass-heavy, groove-locked Bass / Club track at 72 BPM with moderate drive and strong groove. At 65% energy, it works as an energy builder — pushing the floor forward without peaking.
Released 7 Nov 2025 · 5:21 · 48% mood · -8 dB loudness
The feel
The bass weight is the story here — 100% puts it in the top tier of the catalog. Lead with it.
Where it lives in a set
65% energy places it in the build — the stretch where you're winning the floor, not rewarding it yet.
About Sister Zo.
Bass / Club producer and DJ.
117
Median BPM
4A
Top key
2024
Active
16
Tracks
Quick answers.
What BPM is The Fastness?
72 BPM — squarely in bass / club territory, mixable within roughly 67–77 BPM without pitch artefacts.
What key is The Fastness in?
A Major — 11B on the Camelot wheel. Harmonically compatible with 11A, 10B and 12B.
What mixes well with The Fastness?
Tracks in 11B, 11A, 10B or 12B between ~67–77 BPM.
Where does The Fastness fit in a DJ set?
Mid-set energy builder — 65% energy with strong groove pushes the floor forward without peaking. Save peak-time slots for higher-drive records.
Explore: 72 BPM tracks · 11B tracks · 11B → 11A key pair · Harmonic mixing guide
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