Find songs that are Mixed In Key
Choosing how to build your mix will depend on the setting you have in mind for it. For most cases, you would usually choose to create the mix so it flows well and keeps energy and vibes moving throughout. Mashup helps you achieve this by showing you which tracks blend well together by analyzing the harmonic content of the tracks.
The official Mixed In Key algorithm is built into Mashup because it's made by the same company.