# Build a mix from its tracklist
Source: https://docs.aden.space/docs/help/your-music/mixes/build-a-mix

Blend the songs in a mix's tracklist into one recording, tempos matched, ready to share.
Aden plays every song into the next the way a DJ would, and saves the result as the mix's recording. The mixing happens in your browser, so it starts at once and nothing waits on a server.

## Build it [#build-it]

1. Open the mix and go to **Tracklist**.
2. Add at least two of your tracks with **Add tracks**.
3. Press **Build mix** beside it, or search **Build mix** in ⌘K.
4. Check the running order. A small warning beside a song means its key or tempo clashes with the one before it.
5. Press **Smart order** to put the songs in the order that blends best.
6. Press **Build mix**. Keep the page open until it finishes.

The new recording replaces the old one, and every song in the tracklist gets its cue where it takes over.

## Change how it blends [#change-how-it-blends]

Press the sliders icon beside the running time:

* **Blend**: how long each song overlaps the next, in bars.
* **Each song**: play songs in full, or cut them to 3 minutes or 90 seconds for a radio-length mix.
* **Match tempo**: speeds each song up or down a little to meet the set's tempo, like a turntable's pitch fader. Songs too far off play at their own speed.

## Good to know [#good-to-know]

* Songs play their final version, or the newest one with audio.
* Outside links and tracks without audio are left out. The dialog says how many.
* Building uses the same plan as uploading a recording.

## Related [#related]

<Cards>
  <Card title="Make videos of a mix" href="/docs/help/your-music/mixes/export-mix-videos">
    Clips, highlights and the full mix.
  </Card>

  <Card title="Order a DJ set" href="/docs/help/free-tools/key-finder/order-a-dj-set">
    The Camelot wheel behind Smart order.
  </Card>
</Cards>