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Music Factory Free - Change key, change tempo and remove vocal

By KBIC International Ltd

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You can remove the vocal of a song, make a song faster or slower, and change the key of a song with this app!

The app is good for performers who cannot find the right music for their key, want a faster or slower version of the music, or cannot find the music of a song with no vocals.

And for others, it is just HILARIOUS to hear your favorite song in a different tempo or key!

Two simple steps in the app:
1. Select a song from your iTunes library
2. After the song is processed, you can then turn on and off vocals with the switch, change the speed and the pitch of the song with the sliders.

Dirac Time Stretch/Pitch Shift technology is licensed from the DSP Dimension / Stephan M. Bernsee.

This is a free version of Music Factory - Change key, change tempo and remove vocal.

What's New in Version 1.5

Seek support added - User can now go to any part of the song with the new slider

User interface optimized for iOS 7

Restore button added for users who have bought the in-app purchase to restore their purchase onto their new phones

iPhone Screenshot

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Customer Reviews


Waste of time! it gives you 30 seconds to play with it, before you have to buy it! And it didn't even remove the vocals like it claims.. Or maybe 30 seconds isn't long enough for me to figure it out !!!!!! REMOVE FROM PLAY STORE ! Pointless..

Stupid 😒

Why would you only let a song play for 30 seconds... 😐 and on top of that it doesn't even load after a 2nd time. Delete off the store. 💯


It sound grounded and then you want me to pay for an upgrade after listening to a half song. What a waste.

Music Factory Free - Change key, change tempo and remove vocal
View In iTunes
  • Free
  • Category: Music
  • Updated:
  • Version: 1.5
  • Size: 0.3 MB
  • Languages: English, Japanese
  • Seller:

Compatibility: Requires iOS 4.3 or later. Compatible with iPhone, iPad, and iPod touch. This app is optimized for iPhone 5.

Customer Ratings

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Top In-App Purchases

  1. Full Version$2.99