Music Speed Changer allows you to change the speed of audio files on your device in real time without affecting the pitch, or change the pitch without changing the speed. Both speed and pitch may be adjusted together as well. The app is also a music looper as well - you can slow down song speed and loop sections of the music for easy practice.

You can also save the adjusted audio to an MP4 (.m4a) audio file for sharing with friends or listening in another player.

Music Speed Changer is great for musicians practicing an instrument needing to slow down the tempo, speeding up audio books for faster listening, making nightcore or just rocking out to your favorite song at 130%.

Notice for Google Play Music users: Google places DRM on songs purchased through Google Play Music. Your songs purchased in that app will not be visible in Music Speed Changer (or any other music player). A simple way around this is to download the purchased songs through the Google Play Music desktop browser app, then transfer the downloaded .mp3 file to your Android device.

If you have any problems with the app send me an email, thanks.

Features:
-Pitch shifting- change song pitch up or down 12 semi-tones, with fractional semi-tones allowed.
-Time stretching - change audio speed from 33% to 300% of original speed (change BPM of music).
-Utilizes best time stretching algorithm available for mobile, sounds better than all other similar apps. We also have available the old one that most apps use (SoundTouch) in the settings menu if you prefer the sound.
-Rate adjustment - change the pitch and tempo of the audio together.
-Will open just about any audio file format known to humans, send an email if you find one it can't, I can probably add support.
-Music looper - seamlessly loop audio sections and practice over and over.
-Great for making Nightcore.
-Open audio files from your device's storage, or from the cloud.
-Export your adjustments to an MP4 (.m4a) file for sharing or playing in another music player.
-Modern material design UI and simple to use.
-Completely free and no restrictions on this music speed controller.
-No waiting for your local audio file to decode, instant playback and instant audio speed and pitch adjustment. Slow down audio speed or change music pitch instantly for common audio types.