Import the song into BIAB

Select Guitar Window (<CTRL><SHIFT><G>), icon or window/Guitar
Click on the Tutor button
Enable Chord
Play thorugh midi
Select patch
Type of Chords to display - This sets up the chord patter from simple folk to Advance Jazz and some alternative tunings.

Play the song/this will force the generation of the guitar part. You can then copy thie part to melody or solo track for printing and working from.

Works reasonably well IMO


PM