What you’ll build
A 320 kbps MP3, exactly 3 minutes long, with two songs blended through a 10-second cross-fade, balanced levels and clean fades at both ends — ready to hand to your DJ or play through any Bluetooth speaker.
- Durata
- 2:50
- Canzoni
- 2
- Cross-fade
- 10s
- Livello
- Beginner
1. Pick your two songs
The emotional punch of a first dance comes from the contrast between the two songs. Pick them in this order: first the slow song that opens the dance, then the upbeat one that reveals the party.
The opener
A slow ballad between 60 and 80 BPM, perfect for a close dance. Favour a track whose final chorus lands before 1:30 — it makes a strong moment right before the transition.
- 60–80 BPM, 4/4 time or 6/8 ballad.
- A standout chorus or bridge between 1:00 and 1:30.
- Center-mixed vocals, no continuous kick drum (otherwise the cross-fade will be audible).
The reveal
An energetic track between 100 and 130 BPM with a short intro (4–8 bars max) so your guests don’t lose the moment.
- 100–130 BPM, drop or chorus identifiable within the first 15 seconds.
- Short intro (≤ 10 s) or a clean entry point on the first downbeat.
- Key compatible with Song A (same key or a fifth/fourth interval).
2. The reference timing (3:00)
Three minutes is the sweet spot for a first dance: long enough to tell a story, short enough to keep attention. Here is the structure this guide targets — you can tweak the durations in the Variations section.
Stylised view of the final mix. Bars are the audio envelope; the dashed band is the cross-fade window.
3. The walkthrough in MixClap
Six steps, about 10 minutes total. Everything happens in the browser — no file leaves your device until you pay for the export.
- 1Passo 1
Upload your two files
Drag-and-drop both files into MixClap. Recommended formats: WAV or FLAC (best quality), otherwise MP3 320 kbps. M4A and OGG are also accepted.
- Name your files clearly (e.g. `01_slow.wav`, `02_upbeat.wav`).
- Drag-and-drop or click the upload zone — up to 50 tracks per project.
- No practical size limit: files are decoded in the browser.

- 2Passo 2
Order your tracks
MixClap auto-detects the two tracks. Make sure the order is right: Song A (slow) first, Song B (upbeat) second.
- Drag tracks by their handle to reorder.
- Press play to preview each track on its own.
- Rename a track from the edit icon if needed — useful for your DJ.

- 3Passo 31:30
Trim Song A
Set the 1:30 segment you keep. The simplest recipe: start 5–10 seconds before a chorus and end exactly at the end of that chorus — the most emotional moment.
- Click track A to open the waveform editor.
- Drag the start/end markers to frame a 1:30 window.
- Enable the fade-in (≈ 1 s) for a soft start.
- Tip: lock the end exactly on a downbeat to ease the transition.

- 4Passo 41:30
Trim Song B
For the upbeat, start on a clear drop or downbeat, then run for 1:30 to a point that can resolve cleanly.
- Locate the first strong downbeat (often at the end of the build-up).
- Frame a 1:30 window from that point.
- Enable the fade-out (≈ 2 s) so the mix never ends abruptly.
- Listen back: the end should land on a perfect cadence.

- 5Passo 50:10
Set up the cross-fade
This is the heart of the mix. MixClap applies a balanced cross-fade whose duration you choose. For a slow → upbeat hand-off, 10 seconds is the reference value.
- Select the interval between Song A and Song B.
- Set the cross-fade duration to 10 s (dedicated slider).
- Pick the “equal-power” curve so perceived loudness stays constant.
- Loop-preview the transition window until you’re happy.

- 6Passo 6
Export the final mix
Pick your format. MP3 320 kbps is enough for 99% of situations (DJ, venue Bluetooth). WAV or FLAC if your provider accepts them.
- MP3 320 kbps — the universal format, ~7 MB for 3 minutes.
- WAV 16-bit / 44.1 kHz — CD quality, ≈ 30 MB.
- FLAC — lossless, ≈ 18 MB.

4. Common pitfalls
Five mistakes we see often, and how to dodge them.
Cross-fade too short (< 4 s)
A transition that runs too fast breaks the emotion. Below 4 seconds, slow → upbeat feels like a hard cut.
Cross-fade too long (> 15 s)
On the other side, beyond 15 seconds the two melodies blur into mush. Stay between 6 and 12 s.
Picking songs in clashing keys
Distant keys create dissonance during the cross-fade. Favour the same key or a fifth/fourth interval.
Cutting in the middle of a sung phrase
Always trim on a downbeat or at the end of a bar. Cutting mid-word is instantly noticeable.
Forgetting the final fade-out
Without a fade-out, the mix slams shut at 3:00 and breaks the spell. Always enable at least a 2 s fade-out.
5. Variations by length
Three battle-tested durations depending on the scenario. The 3:00 standard is the most used; the two variants suit specific contexts.
| Formato | Canzone A | Cross-fade | Canzone B | Totale |
|---|---|---|---|---|
| Compact (2:00) — fast entrance | 1:00 | 8s | 1:00 | 1:52 |
| Standard (3:00) — the recommended version | 1:30 | 10s | 1:30 | 2:50 |
| Long (4:00) — extended first dance | 2:00 | 12s | 2:00 | 3:48 |
6. Frequently asked questions
How long does it take to build the mix?
Plan for 10 to 15 minutes the first time, following this guide. Subsequent runs take 5 minutes once the workflow clicks.
Do I need any audio background?
No. The guide is aimed at beginners: MixClap applies the right defaults (balanced cross-fade, level normalisation, safety fades).
Are my files uploaded to a server?
No. All decoding and mixing happens locally in your browser via the Web Audio API. Only the final export is encoded server-side after you pay.
Which format should I pick for a professional DJ?
WAV 16-bit / 44.1 kHz if the DJ accepts it (CD quality). Otherwise MP3 320 kbps is indistinguishable to the human ear and works everywhere.
Can I mix more than two songs?
Yes — MixClap accepts up to 50 tracks per project. For a mash-up of three or more, apply the same principle: a cross-fade between every consecutive pair.
How much does the export cost?
Editing is free up to the export. The final download is a one-off €4.99, no subscription, no signup required.
Ready to build your first dance?
10 minutes, two songs, and your 3-minute mix is in your hands — ready to hand to your DJ.
