To play the Baug7 chord, perform a barre by pressing your index finger on the E-string and bottom-A string on the 2nd fret and middle finger on the 3rd fret of the C-string. Let the other string ring open.
The Baug7 chord contains the notes B-D#-F##-A.
To build a Baug7 chord, take the augmented seventh chord formula (1-3-#5-b7) and apply it to the B major scale (B, C#, D#, E, F#, G#, A#).
Identify the first, third, sharp fifth, and flat seventh scale degrees in the B major scale which are B-D#-F##-A.
Notice the "F##" is a double sharp which is the enharmonic equivalent of G note.
Get the secrets to making smooth chord changes on ukulele without hesitating or pausing with the free book Make Smooth, Seamless Chord Changes In 5 Minutes Or Less. You learn:
Enter your details and I'll send you the free book: