[LAU] Variable time-stretching/pitch shifting for the commandline

Hey hey, I'm looking for a tool which can do time stretching and pitch shifting (within moderation!) on the commandline, preferrably not using FFT, because of the artefacts. Use case: create a kind of a DJ set with slight key/tempo modifications. Since I have no experience with this whatsoever and don't want to become a DJ, I think I wouldn't want to work with general speeding up and slowing down of songs. This, I think would require a bigger selection of songs and a very good knowledge or database of all their respective tempos and keys to properly fade. If you can think of anything useful, I'd appreciate it very much. Best wishes, Jeanette -- * Website: http://juliencoder.de - for summer is a state of sound * SoundCloud: https://soundcloud.com/jeanette_c * Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g * GitHub: https://github.com/jeanette-c * Twitter: https://twitter.com/jeanette_c_s I'm so curious, what do you think of me <3 (Britney Spears)