C# chords with alternative bass notes
C# major chords for piano with alternative bass notes presented by keyboard diagrams.
Explanation: The slash in the chord name indicates that the second letter is added as a new bass note. C#/A# should therefore be read as C sharp Major chord with an A sharp note in the bass.
Theory: C#/A# is identical with the third inversion of C#6.
C#/A#

Notes: A# - C# - F - G# / A# - C# - E# - G#
Left hand: 5-3-2-1
Right hand: 1-2-3-5