Bassline Theory
- BPM
- 129
- Open Key
- 4d
- Energy
- 93/100
- Pop
- 14/100
- Length
- 6:59
- Released
- 2023
- Genre
- Tech House
- Loudness
- -8.3 dB
Key, BPM and audio features: model-based audio analysis · how we measure · catalogue updated July 2026
Other versions
- Bassline Theoryoriginal11B · 129
At 129 BPM in A major (11B), Bassline Theory is a peak-time tempo tech house production. The feel is bright and euphoric. The groove is strong and floor-ready. The mix is almost entirely instrumental. Brighter than 83% of Sidney Charles's catalogue. In a set it works best as a peak-time weapon.
- Reach:
- better known than 81% of Sidney Charles's catalogue
- Tempo:
- faster than 75% of Sidney Charles's catalogue
Sonic profile
Frequency spectrum
amplitude · bass → treble
FAQ
What key is Bassline Theory in?
Bassline Theory by Sidney Charles is in A major, or 11B on the Camelot wheel.
What BPM is Bassline Theory?
Bassline Theory runs at 129 BPM, a peak-time tempo track.
What mixes well with Bassline Theory?
From 11B it blends harmonically with 12B, 11A, 10B. Moving to 12B lifts the energy a step.
Is Bassline Theory good for peak time?
With energy 93 out of 100 at 129 BPM, it works best as a peak-time weapon.
Mixes harmonically
11B → 10B · 12B · 11AFrom 11B, 12B (E major) lifts the energy a step; 11A (F♯ minor) settles into the relative minor; 10B (D major) cools the energy down a step.
How to mix it
In 11B at 129 BPM: 12B (E major) — move to 12B to push the floor harder; 11A (F♯ minor) — switch to 11A for a mood change without losing the groove; 10B (D major) — drop to 10B to bring the room down gently.
Pitch range at ±6%: 121-137 BPM — anything in that window beatmatches without sounding stretched.
Key on the fader: without key lock (Master Tempo on CDJs), above roughly +5% it plays a semitone higher, so treat it as 6B rather than 11B; below -5% it reads as 4B. With key lock on, it stays 11B across the whole range.
Programming: a peak-time weapon — save it for the main stretch (energy 93/100).
Similar tempo
Within ±3 BPM of 129 — beatmatch without a big tempo pull.
More tech house
More from Sidney Charles
Full profile
Other recommendations
Beyond strict key and genre matches: tracks that still sit in beatmatch range of 129 BPM with a compatible energy and groove — candidates for a key jump or a genre crossover.
![1+1 [Album Mix] by Coyu cover art](https://qzoszznbkkwwjtagnyok.supabase.co/storage/v1/object/public/dj-covers/bcadf979b8ac5953c4f7.webp){kind=small}
