Guide · 9 min read

How to Merge Songs Online for Free: Make a Dance Medley or Song Mashup in Your Browser

Why merging songs is harder than it looks

Joining two songs sounds simple until you try it. The chorus you want starts 47 seconds in, the second track is noticeably quieter than the first, and the hard cut between them makes dancers stumble on stage. Desktop audio editors can fix all of this, but they come with a learning curve, an install, and often a licence fee. Most phone apps either add a watermark, limit you to two tracks, or only let you trim from the start and end rather than picking an exact slice from the middle.

What most people actually need is narrow and specific: pick the exact parts of a few songs, make them roughly the same loudness, join them smoothly, and get one MP3 they can play from a phone, a speaker, or a video editor. That is exactly the job SongMixer was built for. It is a free music studio that runs in your browser, so the same workflow works on a laptop at home, a school computer, or a phone backstage.

Step-by-step: how to merge songs online free

The whole process takes around ten minutes the first time and two or three minutes once you know your way around. Here is the exact workflow.

1. 1

   Open the studio

   Go to the SongMixer studio in any modern browser. There is nothing to install and no account to create.

2. 2

   Upload your songs

   Add your MP3, WAV, M4A, OGG or FLAC files (up to 60 MB and 20 minutes each). Each one appears as a clip with its own waveform.

3. 3

   Crop the exact part you need

   Drag the start and end handles on each waveform to keep only the section you want, then press preview to hear the cut.

4. 4

   Balance the volume

   Use the per-clip gain (dB) control to make quiet songs louder or loud songs quieter so the clips sound even.

5. 5

   Put the clips in order

   Reorder the clips so the energy of your medley builds the way you want it to.

6. 6

   Choose a mode

   Pick Sequence to stitch clips back to back with an optional 0 to 5 second crossfade, Mix to layer them on top of each other, or Jumble to cut them into segments and shuffle them into a remix.

7. 7

   Render and download

   Press render, watch the live progress, and download your finished MP3.

What the free plan includes

Every render on the free plan can combine up to 4 clips, you can make 10 renders a day, and downloads are 128 kbps MP3, which is plenty for rehearsals, reels and practice tracks. Your uploads and renders are deleted automatically after 6 hours, so download your mix as soon as it is ready. A Pro plan with 12 clips per render, unlimited renders, 320 kbps MP3, WAV export and longer storage is on the way; you can join the waitlist on the pricing page.

Sequence vs Mix vs Jumble: which mode should you use?

SongMixer has three render modes. They all start from the same cropped, volume-balanced clips; what changes is how those clips are combined into the final file.

Sequence: the classic medley

Sequence stitches your clips end to end in the order you set. Turn the crossfade up and the end of one clip fades out while the next fades in, so there is no silence or click at the join. This is the mode for almost every dance medley, choreography track, and workout playlist.

Mix: the layered mashup

Mix plays every clip simultaneously. Use it to put an instrumental under a vocal, lay a beat under a spoken intro, or stack an ambient track behind a podcast voice. Because several loud tracks added together can easily distort, Mix runs the result through a limiter that keeps peaks in check. You still control the balance with each clip's gain: pull the background track down 6–10 dB so the main track stays clear.

Jumble: the shuffled remix

Jumble chops your clips into segments of a length you choose, say 2 or 4 seconds, and shuffles them into a new order. Short segments sound glitchy and energetic; longer ones feel like a DJ jumping between tracks. Every jumble uses a seed, so if you like a result you can get exactly the same shuffle again, or change the seed to hear a different version.

How to make a dance medley that flows

Medleys are the single most common reason people search for a way to merge songs. School annual-day performances, wedding sangeet routines, dance-class showcases and competition entries all need several songs cut down and joined into one continuous track. A good medley follows a few rules.

1. Plan the story before you cut

Decide the order by energy, not by favourites. A common structure is a slower or emotional opening, a build through two mid-tempo songs, and a high-energy finale. Write down roughly how many seconds each song gets; for a four-song, four-minute routine, that is about 60 seconds per song.

2. Choose the right crossfade length

• 0–0.5 seconds: a near-hard cut. Best when dancers need a crisp cue to change formation, or when the next song starts on a big hit.
• 1–2 seconds: the sweet spot for most dance medleys. Smooth enough to hide the join, short enough that two beats do not clash for long.
• 3–5 seconds: long, gentle blends. Great for slow songs, yoga or cool-down sections, and ambient transitions; risky between two fast songs with different tempos.

3. Crop on the beat

The cleanest medleys start each clip on the first beat of a bar (the "one") and end it just after the last beat of a phrase. Look closely at the waveform: drum hits show up as tall, sharp spikes, which makes them easy to find. Drag the start handle to just before a spike, preview, and nudge until the clip starts exactly on the downbeat. Do the same at the end so the phrase finishes rather than cutting off mid-word.

4. Match loudness with gain

Songs from different years and sources are mastered at very different levels. If one clip sounds noticeably quieter, raise its gain by 2–4 dB; if one is much louder, lower it. Preview the end of one clip and the start of the next back to back. When neither feels like a jump in volume, you are done.

Pro tips for cleaner mixes

• Use the best source you have. A WAV or FLAC upload gives a cleaner result than an already heavily compressed MP3.
• Leave a little air. Starting a crop a fraction of a second before a vocal line avoids clipping the first syllable.
• Keep the total length in mind. Reels and Shorts reward tight edits; stage performances usually have a fixed time slot, so check the rules first.
• Preview every join. Most mistakes are audible in the two seconds around a transition, so that is where to listen hardest.
• Save your seed. In Jumble mode, note the seed of any version you like so you can recreate it later.
• Download straight away. Files are removed after 6 hours for privacy, so keep a copy of anything you want to reuse.

Who uses song merging, and how

Dance teachers and choreographers

Cut four songs to the exact counts of a routine, join them with short crossfades, and hand every student the same MP3 for practice. For wedding sangeet and annual-day performances, a single track also makes life easier for whoever is running the sound system.

Reels and Shorts editors

Build a short music bed from the best seconds of two tracks, or use Jumble to make a quick, punchy transition sound, then drop the MP3 into your video editor.

Fitness instructors

Line up warm-up, peak and cool-down songs in Sequence mode, with longer crossfades in the cool-down so the class winds down smoothly.

Podcasters and DJs in training

Podcasters use Mix to lay intro music under a voice track. DJs in training use Sequence to practise transitions and Jumble to explore unexpected combinations.

A note on copyright

Frequently asked questions