How to merge songs into one track (without losing quality)
Join several audio files into one continuous file, gapless or with crossfades, and export it without needless re-encoding.
Last updated · 6 min read
Whether it’s a workout playlist, a wedding entrance, a dance-school routine or a long podcast intro, you often need several songs as one single audio file. “Audio joiner” websites do this by uploading your files, re-encoding everything to MP3 and sending back a result you can’t adjust. This guide shows a better way: merge the songs in your browser with MixSongs, keep full quality, and control every transition.
Why merge in a timeline instead of a joiner
- No upload. Your files are decoded and joined on your own computer.
- No forced MP3. Export lossless WAV or FLAC if your sources are lossless.
- Real transitions. Choose a hard cut, a gap, or a crossfade of any length and shape.
- Edit while you merge. Trim a long intro, cut a section, or lower one song that’s louder than the others.
Step 1: Add all the songs
Open app.mixsongs.app and drag all your files onto the page at once. The import card lists each file with its real format, bitrate, sample rate and duration. Rename them if you like, and pick a colour for each.
For the placement, choose in sequence – after the last song. Each song is added after the previous one, overlapping slightly with an automatic crossfade.
Step 2: Decide on the joins
You have three kinds of join:
- Crossfade (default). The songs overlap and fade into each other. Adjust each one by dragging the white volume checkpoints. See how to crossfade two songs for details.
- Gapless, no fade. Drag the second clip so its start lines up exactly with the end of the first. With snap on, the clip edge snaps to the previous clip’s end. Then delete the crossfade checkpoints (double-click them) so both songs play at full volume.
- A pause between songs. Drag the next clip to the right to leave a few seconds of silence. The ruler shows exact times.
Step 3: Even out the volume
Songs from different albums are often mastered at different loudness. Use each track’s fader to bring a loud song down or a quiet song up, and check the master meters in the top bar while you play. The master limiter (LIM) protects you from clipping if a song is pushed too hard.
Step 4: Trim what you don’t need
- Shorten a clip: drag its left or right edge. Nothing is deleted from the source, so you can drag it back later.
- Remove a section: put the playhead at the start of the section and press S to split, then at the end and press S again, then select the middle piece and press Delete.
- Undo anything with Ctrl+Z.
Step 5: Export one file
Click Export and pick:
| Your sources | Best export |
|---|---|
| All WAV/FLAC/AIFF | FLAC 24-bit (lossless, about half the size of WAV) |
| Mostly MP3/AAC | MP3 320 kbps |
| You need maximum compatibility | WAV 16-bit |
The export dialog recommends the right option automatically. You can also export just a looped section by setting a loop on the ruler first.
Frequently asked questions
How many songs can I merge? There is no fixed limit. Very long projects (several hours) need more memory, so a computer with 8 GB of RAM or more is comfortable for long mixes.
Will merging reduce quality? Not with WAV or FLAC export: MixSongs mixes in 32-bit floating point and only rounds to 16 or 24 bits at the very end, with dither. MP3 export re-encodes once, like any MP3 tool.
Can I merge songs with different sample rates? Yes. The project automatically uses the highest sample rate among your files and resamples the others with high quality.
Is it really free? Yes, merging, editing and exporting are free, with no watermark and no account.
Open MixSongs and merge your songs. If you’d like to remove the vocals from one of them first, see how to make a karaoke version.