Originally Posted by
CyrilleB
Interesting discussion.
Yes, I agree with the fact that that "So What" key should be set in Dm (this is obviously the final chord of the tune). Up to the player to determine which mode (in this case, dorian), but for some other tunes in minor keys, it can be aeolian or Phrygian. There are songs where is impossible to set a key. For ex., in the song "unforgettable", it starts in the key of F and end in the key of Bb. So for such songs, we can set it either in F or Bb. But it's necessary to always specify if it's the starting key or the ending key.