228TC  TTune specific tunings228 CTB244RTI%Flats0C-C?D D?E F F?G G? A A? B @ 01234RTI3RTI2RTI4RTI1228 CTB244RTI%Flats0C-DbD-EbE-F-GbG-Ab A- Bb B-@ 01234RTI3RTI2RTI4RTI10XX122a