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A browser app that lets you load separate instrument tracks ("stems") of a song and play them back together, with the ability to mute/solo them individually

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This app can be data and memory intensive, since it involves loading many large audio files at the same time. Please do not run it on mobile devices unless you have enough data and memory. See the numbers below each example. More info...

One minute of audio is about 1 MB as a medium quality (compressed) mp3 and 20 MB* as a (uncompressed) wave file. Even if the audio files are provided as mp3s, they still have to be decoded to wave format in order to be played, where they may take up a large amount of your device's memory. For example, a 3 minute song with 15 tracks would take up only about 45 MB of data to download, but a whopping 1 GB of memory once decoded.

* Unfortunately, the Web Audio standard that this app relies on currently only supports 32-bit wave audio, which takes up double the memory of typical CD quality (16-bit) audio.

Less info...

Small Examples:

Technodrome Part II


Mutsuhiko Izumi
TMNT IV: Turtles in Time
0:33
6
3 MB
69 MB

Play of the Game


Neil Acree
Overwatch
0:30
18
9 MB
0.2 GB

More Examples:

Commanders of the Agile Skies


Vincent Rubinetti
3:17
15
46 MB
1.1 GB

Main Theme


Vincent Rubinetti
Fara and the Eye of Darkness
2:28
25
56 MB
1.3 GB

JJ's Beat


Vincent Rubinetti
Fara and the Eye of Darkness
4:49
21
93 MB
2.2 GB

Expectations


Vincent Rubinetti
Hacky Zack
4:35
18
76 MB
1.8 GB

Voilà, Delivery Specialist


Vincent Rubinetti
2:46
12
31 MB
0.8 GB

Avast


Vincent Rubinetti
High Noon Revolver
2:23
12
27 MB
0.7 GB

Into the Blue


Vincent Rubinetti
High Noon Revolver
2:19
12
26 MB
0.6 GB

Victory March


Vincent Rubinetti
0:24
21
8 MB
0.2 GB

Owner of a Lonely Heart


Yes
90125
4:36
6
26 MB
0.6 GB

Boulevard of Broken Dreams


Green Day
American Idiot
4:27
7
29 MB
0.7 GB

Crawling


Linkin Park
Hybrid Theory
3:30
8
26 MB
0.6 GB

Shut Up and Dance


Walk The Moon
Talking Is Hard
3:20
8
25 MB
0.6 GB

Misery Business


Paramore
Riot!
3:31
11
36 MB
0.9 GB

September


Earth, Wind & Fire
3:41
9
31 MB
0.8 GB

La Villa Strangiato


Rush
Hemispheres
9:38
6
45 MB
1.1 GB

Set For The Spark


Vincent Rubinetti
4:26
6
25 MB
0.6 GB