Comment 5 for bug 1866706

Your link is dead, I think it is:
https://play.google.com/store/apps/details?id=mezcla.armonica.rueda.camelot&hl=de&gl=US

In addition I have found here a complete description of key transitions:
http://blog.dubspot.com/harmonic-mixing-w-dj-endo-part-1/

Maybe we can use this knowledge somehow ...