Conservate 2095 Guitar Pitch Pipe 2095 Guitar Pitch Pipe or PG-013 Guitar Pitch Pipe Use 4 highest notes for baritone uke KEY of G Baritone Ukuleles tune to the Key of G.... you can use a guitar Pitch Pipe, and use the 4 highest notes for your baritone uke Note: Classic and Tenor Ukes tune to Key of "C" soprano tuning and use the same Pitch Pipe. On the "Low G" Tenor Tuning, tune the 4th string with your finger on the 12th fret.... instead of with an open string