So in essence, b9ths, #9ths are out, and of course a Dm7b5, which is in the bridge of "Give Me A Kiss To build A Dream On," and there's one in "Give Me The Simple Life," when played in the key of Eb. I assume with one finger mode, it would be wise to use a midi on such tunes. I have maybe 20 midi files that I use. That doesn't bother me and they sound just like the original recording. So 11ths, 13ths etc. are out too! What about a sus4?