I can't remember ever using an add11 chord. In my experience, the 'add 11' variation of a sus4 (or simply sus) chord usually comes from the note occurring in the melody rather than as a chord tone in the harmony.

Given your chord progression above, I suspect that its the 4th of the chord (the 11th is a 4th that's one octave higher) resolving to the 3rd that is what you're after. This means the sus chord is your best option.

Below are the chords' notes for reference

Bbadd11 = Bb D F Eb (Eb is above F)

Bbsus = Bb Eb F (Eb is below F)

Gadd11 = G B D C (C is above D)

Gsus = G C D (C is below D)

Given that your 'add11' chord resolves to a normal major, this is saying that the 4th (aka 11th) is resolving to D (for Bb chord) and B (for G chord). This is standard behaviour for a sus chord.

Also, just in case someone reads this post who is not aware of the following...

...the chords that BIAB supports are found in either "Chord Builder" (right-click on the chord sheet and select Chord Builder) or look in Help's index and scroll to "Chord - list".

Power user Pipeline has also created a great add-on for BIAB that makes loading chords easier. His tool also gives all available chords. If you're interested, go to...

http://www.pgmusic.com/forums/ubbthreads.php?ubb=showflat&Number=464478#Post464478

Regards,
Noel

MY SONGS...
Audiophile BIAB 2025