Mixing techniques

How to mix songs with different BPM

Choose the right transition for the tempo gap. Practise a shared-tempo blend, a deliberate tempo reset and a half-time change.

Choose the transition before changing speed

A small tempo difference often suits a blend at a shared BPM. A larger difference may work better with a clear end to one track and a fresh start for the next.

Judge the change by listening. The same BPM gap has a different impact at different speeds: moving from 120 to 126 BPM is a 5% increase; moving from 60 to 66 BPM is 10%.

Use Key Lock when you want to preserve pitch as tempo changes. It cannot prevent every artifact at extreme settings. Vocals, long notes and drum attacks are useful places to check the result.

Blend at a shared tempo

For two tracks at 120 and 124 BPM, try a transition at 122 BPM. That speeds up the first by about 1.7% and slows the second by about 1.6%.

Prepare the current track

During rehearsal, bring A towards 122 BPM before the overlap. Spread the adjustment across a suitable passage and listen for a distracting change in the groove.

Match the incoming track

Set B to the same tempo and align the beats, using Sync if needed. Choose entry points that also align the musical phrases.

Complete the transition

Keep the tempo steady while both tracks are audible. Blend the levels, transfer the bass and remove A before making another tempo change.

Once B plays alone, you can leave it at the shared tempo or gradually return towards its original speed. Disengage Sync before making an independent tempo change.

Use a musical break for a larger change

For a move such as 100 to 128 BPM, forcing a long beatmatched blend may alter the tracks more than you want. Try ending the first groove before introducing the second.

Phrase-end cut

Choose the final beat of a phrase on A and a strong downbeat on B. Rehearse the handover at B’s original tempo, with no sustained drum overlap. Match the levels so the tempo change does not also create a volume jump.

Breakdown transition

Use a passage where A’s drums drop out. Fade its remaining sound, then introduce B at the new tempo. Check for vocals, chords or an effect tail that still imply A’s rhythm.

An Echo can shape the exit, but repeated echoes still carry the old pulse. Let the tail end before the new rhythm takes over if the two conflict.

Recognise half-time and double-time relationships

An 80 BPM pulse can align with every other beat of a 160 BPM track. This is a rhythmic relationship, not a requirement to double the playback speed of the slower track.

160 BPM1234

80 BPM12

Count the phrases in both tracks. Four bars at 160 BPM last as long as two bars at 80 BPM in 4/4, so matching pulses alone does not align their section changes.

Rehearse the handover at the tracks’ intended speeds. If Sync drives one towards an unwanted tempo, disengage it and align the entrance manually. Do not assume every 2:1 pairing will fit.

Compare two transitions with the same pair

Choose tracks with a manageable tempo difference. Record one shared-tempo blend and one phrase-end cut using supported, recordable files.

Groove: does the tempo adjustment weaken either track?
Timing: does the new downbeat arrive where you expect?
Energy: does the change suit the next section of your set?

Keep the method that serves the tracks. A deliberate cut can be more effective than an extended blend.

Record and compare your transitions →

Check the harmonic fit →

Questions & answers

Frequently asked

What BPM difference is safe to mix?

There is no universal limit. Listen to the percentage change, track arrangement and sound quality at the adjusted speed. Use a different transition if the result does not suit the music.

Should I change tempo during the overlap?

For the shared-tempo exercise, keep both tracks steady during the blend. Make further changes once only one deck is audible.

Can I mix an 80 BPM track with a 160 BPM track?

Their pulses have a 2:1 relationship, so some pairings can work at their intended speeds. You still need to align phrases and check the rhythm and arrangement.