hi mike, sorry about delay in answering...to be honest ihave never used the "bass follow" control..what i HAVE noticed is that with the new (in opsys 2.5) korg named "expert chord recognition" i now have no problems with any bass lines in any styles, as i also change from chords in root to 1st and 2nd inv, also chords in the "power" style ie no 3rds, even slash chords are no problem any more...another small thing that i like, although it may not affect anyone else..is that you can now get a minor 6th happening without having to play a fistful of notes, very handy, particularly on songs above andante...anyhoo, i am still running thru my manuals on this one, bit i have a suspicion the expert chord recognition feature is what you require..
dennis

peace, out