The C#mmaj7bb5/D# is a fundamental major chord in guitar music. To play this chord correctly, ensure your fingers are placed precisely on the frets indicated in the diagram above.

Music Theory Analysis

From a theoretical perspective, the C# minor major seventh double flat fifth over D# is built using the 1P, 3M, 4P, 7M intervals. In the key of C# Major, this chord functions as the I chord.