C♭ Major is a musical key that consists of seven notes: C♭, D♭, E♭, F♭, G♭, A♭, and B♭. It is often considered a challenging key for musicians due to its use of double flats, particularly the F♭, which is enharmonically equivalent to E. This key is typically used in orchestral and choral music, where its unique sound can create a rich harmonic texture. In terms of scale degrees, the tonic of C♭ Major is C♭, the dominant is G♭, and the subdominant is F♭. The key signature for C♭ Major contains seven flats, making it one of the most complex key signatures in Western music. Composers like Johannes Brahms and Richard Wagner have utilized this key to evoke specific emotions and atmospheres in their works.