pgmusic uses a much different system for "Get Chords from MIDI file" routine.

Since MIDI data already contains the actual notenames, it is a lot different from trying to get a machine to decipher the complex waveforms of audio file and then analyze and convert to pitch from frequency, then take all of that and analyze and convert to chords.

The Audio Chord Wizard works best on simpler songs, attempts to use it on jazz, etc. songs where the chords often have extensions - and the bass moves at slightly different times - can have not so great results. ACW can get confused rather easily when confronted with these things. It also likes a nice CLEAN audio file as well. The level of the file seems to be as important as anyting else, too. Sometimes if the level is too high, ACW has trouble. Likewise if the level is too low. There's a Sweet Spot and it changes from recording to recording.

Sometimes finding a good MIDI file to download and using that Get Chords command can yield the chord for a song faster - and more accurately.


--Mac