Smart678 — the easy way to edit and clean your routines’ music.
Smart678 finds the tempo, maps the song’s sections, and keeps every edit point on the beat. Trim a song to routine length, scrub out inappropriate lyrics, or change the speed without changing the pitch.
Your first 3 song edits are free.
- Instantly see your song's structure
- Make clean cuts on the beat
- Runs on laptops, tablets & phones
- No audio experience needed
shorten
Edit any song to routine length.
Remove a verse, tighten an intro, keep only what the routine needs. Smart678 maps the song’s sections and snaps every edit point to the beat, so that your dancers get music worthy of your choreo.
Clean
Scrub out inappropriate lyrics.
Break out the sponge to remove words while the music keeps playing. You can also mute all the vocals with one click for an instant instrumental.
Speed
Change the tempo.
Speed a song up or slow it down so that your dancers aren't rushing the beat. Drums stay crisp and vocals stay clear. Make your changes in percentage or tempo increments.
How it works
1
Upload your song
Smart678 imports the most common audio formats: MP3, WAV, M4A, or AIFF.
2
Smart678 analyzes the song
It finds the tempo, locks the beat to a grid, and labels each song section, so you can instantly see where the verses and choruses are instead of hunting for them.
3
Drag, listen, download
Shape the edit, hear the result instantly, and download a stage-ready MP3 or WAV.
Simple credits. No subscription.
One credit covers one song: upload it once, then revise and download it as many times as you like, forever.
Starter
US $19
5 credits
Launch bonus: 3 credits (8 credits total)
Season
US $49
14 credits
Launch bonus: 7 credits (21 credits total)
Pro
US $99
31 credits
Launch bonus: 16 credits (47 credits total)
Studio
US $199
67 credits
Launch bonus: 34 credits (101 credits total)
Launch bonus credits included with packs purchased through September 30, 2026.
- Credits wait for you. Paid credits keep for seven years. If you don't use them all this season, they are waiting for you next season.
- No monthly fee. Nothing to cancel when the season winds down, nothing to restart in the fall.
- Never charged twice for the same song. Re-uploading a song you already imported is free.
Buying for your whole staff? Email us.
Questions, answered
How long does it take to learn?
About one song. With anything new, it takes a few minutes to get oriented. After your first song, most people get cruising on it. That’s because Smart678 analyzes the tempo, locks the beat to a grid, and maps out the song’s sections for you. For many songs, you never have to zoom in to find the transient of the waveform, and will get it to routine length in just a few minutes.
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What kinds of songs work best?
Songs with a steady beat, which is most of what dancers perform to. Smart678 finds the tempo analyzes the song structure, and keeps your edit points on the beat. Free-time songs can still be edited by hand.
What files can I upload?
MP3, WAV, M4A, and AIFF. Downloads come back as a high-quality 320 kbps MP3 or a 44.1 kHz / 16-bit WAV, ready for the studio and the stage.
Do I need to install anything?
No. Smart678 runs in your web browser. The heavy lifting happens on our servers, so it works on the computer, tablet, or phone you already have.
How do credits work?
One credit unlocks one song. From then on, that song is yours to edit and download without limits, and re-uploading it never costs a second credit. Paid credits keep for seven years.
Is my music public?
No. Your songs and your edits are private to your account, unless you want to share your edit points publicly.
Who makes Smart678?
Squirrel Trench Audio. We have been creating performance-ready soundtracks for dance studios since 2010, and our work has been the soundtrack for roughly 25,000 routines worldwide.
More about who we are on the About page.
Music worthy of your dancer.
Your first 3 song edits are free.