Smart playlist reorder
Every transition,
in key.
Upload a playlist and we'll reorder it so each song flows naturally into the next, matching the key, tempo, energy, and mood.
Songs stay in key
Songs with matching musical keys land next to each other, so chord changes sound natural instead of jarring.
Adaptive tempo matching
When the music is danceable, tempo matters most. When it's mellow, energy and mood lead the way.
Automatic song lookup
We automatically look up each song's key, tempo, and vibe from public music databases. No account needed.
Step 1 / 3
Upload your CSV
Export a playlist from Spotify, Apple Music, Rekordbox, or write one by hand.
Step 2 / 3
We look up each song
Tempo, key, energy, and mood are pulled in automatically from public music databases.
Step 3 / 3
Download the reorder
A smart algorithm finds the smoothest running order, then hands you back a new CSV.