Varispeed by Elisabeth Homeland

Varispeed is a MaxForLive device that allows you to use Ableton Live like an analog tape recorder.

It enables you to transpose your entire song (audio and MIDI clips) in both Session and Arrangement View by up to -24 / +24 semitones while accurately changing the tempo.

Additionally, Varispeed can transpose Simpler devices in Slicing mode, 
MIDI information after leaving clips (such as sequencer and chord generator outputs or individual Drum Rack cells), 
and some built-in Live effects’ pitch parameters (e.g., Shifter, Spectral Resonator, Corpus and some more). 

This gives you the ability to record parts in different speed and pitch or explore your song in different keys.

There’s a special version that is optimized to work with Push3 Standalone! 
(All the features works just like in the standard version.)

VARISPEED FEATURES:

• Place one instance of Varispeed on your master or any track to transpose your entire song using the mappable dial or +/- buttons
• By default, it transposes both audio and MIDI clips, as well as Simpler devices in Slicing mode in both Session and Arrangement View.
• Transpose up or down by up to 24 semitones in both directions (smaller intervals than semitones are not supported).
• Exclude specific tracks by adding a keyword or symbol to their names, keeping their MIDI and audio clips untouched in your project (default symbol: @).
• Transpose MIDI information after leaving the clips for individual drum rack cells, sequencer outputs, and chord generator outputs (see VPitch section for details).
• Transpose certain built in Live effect’s pitch parameters : Shifter, SpectralResonator, Resonators, Corpus, PitchHack, PitchLoop89
• Disable any processing circuit in the device for more efficiency or specific use cases (e.g., disable the Session View or Arrangement View circuit if not needed).