based on G#

or Ab

Tuning 6 5 4 3 2 1
Open G# D# G# D# G# C D# open G tuned up 1/2 step
G# D# G# D# F B# D# (isn't B# really a C?)
Ab Eb Ab Eb G C Eb open A tuned down 1/2 step - notice the difference of the 3rd string between open G tuned up and open A tuned down