Learn "San Lorenzo" by Pat Metheny and Lyle Mays
Here's how I play "San Lorenzo."
Here's the tuning and string gauges, courtesy of David Kean:
Eb3 .021w/Bb3 .013 5th
F3 .018 /C4 .012 5th
Ab3 .015 /Eb4 .010 5th
Bb3 .013 /F4 .009 5th
C4 .012 /G4 .008 5th
F4 .009/F4 .009 Unison