WaveMix
How to shorten a song so no one hears the cut
You need a four-and-a-half-minute track to run for ninety seconds under a video. You delete a chunk from the middle, and the join is obvious every time. The problem is almost never that the crossfade was too short — it is that the cut is in the wrong place.
Why deleting a chunk always sounds wrong
Pick a section at random and remove it, and you usually break three things at once. Any one of them is enough to give the edit away:
- You cut while someone is singing. Voices are what ears track most closely. Slice a word in half and no fade will cover it — it reads as a dropout, not an edit.
- You cut mid-bar. Music runs on bars. If the piece you removed is not a whole number of bars, everything after it shifts off the grid, and the drums sound like they are limping from that point on.
- The two sides are at different energies. Join the peak of a chorus straight onto a quiet verse and the volume, the instrument density and the reverb all change in one sample. Even with the beat intact, it sounds like a different song.
Three common approaches, and what each costs
| Approach | What you get |
|---|---|
| Hard cut plus a crossfade | Hides the click, not the misplaced beat or the jump in content. The longer you fade, the more it sounds like a fault. |
| Speed the whole track up | Pitch and character change with it. Vocals give it away immediately — it just sounds sped up. |
| Keep the intro and the chorus only | The length works out, but nothing builds to the chorus, so it lands out of nowhere. |
The three things a good cut point has
Turned around, an edit is inaudible when all three are true at once:
- It sits on a section boundary. Intro, verse, chorus and bridge already have seams between them. Change content there and the listener was expecting a change anyway.
- Nobody is singing across it. Cut where the vocal has stopped and there is nothing for the ear to catch.
- What you removed is a whole number of bars. Then everything after it still lands on the original grid.
The counter-intuitive part: how smooth the transition is matters far less than where it sits. Get the position right and you barely need a fade at all; get it wrong and no amount of fading will save it.
Doing it in WaveMix
- 1. Drop the track in and let it map the structure. Where the intro ends, which second the chorus starts on, which stretches have no vocal — it marks all of that on the page.
- 2. Type the length you need. Ninety seconds, say. You get several different edits back — one drops a verse, another drops a chorus repeat — with the trade-off written on each card.
- 3. Audition, pick one, export. Export audio as WAV, or export just the markers and take them into DaVinci Resolve, Premiere, Audition or CapCut to cut picture against the edit points in your own timeline.
Two things people ask
The result is a few hundred milliseconds off my target. Does that matter?
Usually not, and that slack is exactly what buys you the bar alignment. Forcing it to a round number means cutting mid-bar, which costs far more than the fraction of a second. Leave a little headroom in the edit instead.
Can I trim a song that has vocals?
Yes. Even with a long stretch removed from the middle, the lyric still runs continuously — you will not get half a sentence. Lyrics can also be exported as an SRT subtitle file and taken straight into your editor.
Try it
Nothing to install — it runs in the browser.
