C7 chords with alternative bass notes
C7 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. C7/A should therefore be read as C seventh chord with an A note in the bass and so forth. Note that C7/D would also be possible to play using two hands without an inversion.
Theory: C7/A could be seen as an inversion of C13 with the ninth and the eleventh omitted. C7/F could be seen as an inversion of C11 with the ninth omitted. C7/D is also an inversion of C9.
C7/A
Notes: A - C - E - G - Bb
C7/F
Notes: F - C - E - G - Bb
C7/D
Notes: D - E - G - Bb - C