A half step below Drop D via Eb — common in modern metal and metalcore (Bullet for My Valentine, A Day to Remember). Low to high: C# G# C# F# A# D#.
Drop C# (Drop Db) tuning is, from the low (6th) string to the high (1st) string, C# G# C# F# A# D#.
Tune to Eb standard (every string down a half step). Then drop the lowest string one whole step, from Eb to C#. Result: C# G# C# F# A# D# — a heavy modern-metal favourite.
Popular songs in Drop C# (Drop Db) tuning include Down with the Sickness by Disturbed, My Own Summer (Shove It) by Deftones, One Step Closer by Linkin Park.
A half step below Drop D via Eb — common in modern metal and metalcore (Bullet for My Valentine, A Day to Remember).
More tunings: see all 19 tunings · standard tuning chart