How to Mash Up Two YouTube Songs Without Downloading Them

To mash up two YouTube songs, open the free YouTube Mashup Maker, paste both links, set a cue point on each one, enter or tap the tempo, press Match to deck A, then press Sync start and slide the crossfader. Both songs play from YouTube's own players at the same time, so you're mixing the originals live and nothing gets downloaded.

That last part matters more than it sounds. Here's why, and how to get a mix that doesn't fall apart after eight bars.

Why not just download the songs?

The old way of doing YouTube mashups (and how sites like Rave.dj work) is to grab the audio from YouTube, remix it on a server and hand you a new file. It's convenient, but it has two problems:

1. It breaks YouTube's rules. YouTube's terms and its developer policies don't allow downloading or separating the audio from videos without permission.
2. The artist gets nothing. A remixed file isn't a YouTube view. No view count, no ad revenue, no listener stats for the creator whose song you're enjoying.

Mixing inside YouTube's embedded players flips that. Each song is a normal embedded video, the same thing you see on a thousand blogs. YouTube counts the view and runs its ads. The mashup tool only moves the controls that YouTube gives every website: volume, speed and where the video is.

The trade-off: you can't pull the vocals out of one song and drop them on another one's instrumental. What you get is live mixing, the way a DJ blends two records.

What makes two songs work together?

Three things decide whether a mashup sounds intentional or like two radios on at once:

• Tempo. Songs within about 5–8% of each other's BPM can be matched without the vocals sounding chipmunky. Half or double time works too: a 70 BPM ballad lines up with a 140 BPM track.
• Key. Songs in the same or a related key sound good layered. If the overlap sounds sour, try a different section rather than a different song.
• Energy. A gentle acoustic track straight into a festival drop rarely works, even at the same tempo.

Before you start, look up the BPM of both songs (most are listed online), or use tap tempo in the tool.

How do I mix two YouTube songs step by step?

1. Paste the links. Open the YouTube Mashup Maker and add the beat-heavy song first. Deck A leads the sync, so a steady drum track there makes everything easier. Add the vocal song as deck B.
2. Find the good bits. Play deck A to the start of the section you want, then press Cue in here. Do the same on deck B. If you want a section to repeat, play to its end and press Cue out here: that deck now loops.
3. Set the tempo. Type each song's BPM, or press Tap tempo along with the kick drum about eight times.
4. Match the speed. On deck B, press Match to deck A. The tool works out the speed deck B needs and picks the closest one YouTube offers for that video. If it's still more than about 2% off, it tells you.
5. Sync start. Both decks jump to their cue points and start together. Deck A leads, and if deck B drifts it gets nudged back every half second.
6. Mix. Slide the crossfader between A and B, or set a length in bars and press Fade to B for a smooth handover on the beat.
7. Share it. Copy share link puts the whole mix (videos, cues, speeds and fader) into one link. Anyone who opens it hears the same mashup, played from YouTube.

How does tempo matching work on YouTube?

YouTube's player lets a website change playback speed, the same as the speed menu in YouTube's own settings. Speed and pitch move together, like a record on a turntable. If deck A runs at 124 BPM and deck B at 118, deck B needs to play at about 1.05× to keep up.

Many YouTube videos allow fine speed steps, so a close match is possible. Some only offer the classic 0.25× steps (0.75, 1, 1.25…). For those, the tool shows the speeds it can use, and you'll get a closer match by choosing songs whose tempos are already near each other.

Why does a video say it can't be played?

Some owners turn off playing their videos on other websites, and some music videos are blocked in some countries. When that happens:

• Search YouTube for another upload of the same song. The artist's "Topic" channel and official lyric videos often allow embedding.
• Live performances and covers are usually embeddable too, and often make more interesting mashups anyway.

Can I do this on my phone?

Partly. Phones, iPhones especially, usually let only one video play at a time, so you'll hear one deck at most. On Android Chrome, pressing play on each player yourself sometimes works. For real mixing, use a laptop or desktop.

Common mistakes

• Leading with the vocal track. Deck A sets the timing. Put the song with the steadiest beat there.
• Fading on random beats. Use the bar-length fade so the handover lands on the beat.
• Big speed jumps. Anything over about 10% sounds odd. Choose closer songs.
• Forgetting the loop. A 4- or 8-bar loop on the instrumental keeps a groove running under the vocal while you play with the fader.

Want to remix your own files instead?

If you own the songs, or have royalty-free tracks, the Song Mashup Maker mixes files from your device and detects their BPM automatically. To slow a single track down with reverb, use the Slowed + Reverb Maker, and see how to make a song mashup for layering and filter tricks.

A note on sharing

Sharing the mashup link is fine: it just plays the original videos from YouTube. Recording the mix and posting it on TikTok, Instagram or YouTube is different. It contains other people's recordings, so you'd need the rights holders' permission.