tune all guitars down 1/2 step
Gb-------------------------------------------------------
Db---------------------------5--------------5---5-7-8-7-5
Ab------7---5-7------7---5-7--------7---5-7---7----------
Eb--0-0---7------0-0---7--------0-0---7------------------

Gb-------------------------------------------------------
Db---------------------------5--------------5---5-7-8-7-5
Ab------7---5-7------7---5-7--------7---5-7---7----------
Eb--0-0---7------0-0---7--------0-0---7------------------