Bb #5; Bbaug. The notes in this chord are Bb, D, and F#. Notes that compose the Bb aug chord. Bbaug Guitar Chord and alternate tunings. 7 chord voicings, charts and sounds. Chord notes and structure: Bb D Gb (R 3 m6). How to play Bb aug chord for Guitar in Standard tuning. to learn notes, guitar (or ukulele, bass, you name) chords in different tuning, perfect pitch and lots more.