A7 chords with alternative bass notes
A7 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. A7/G# should therefore be read as A seventh chord with a G# note in the bass and so forth.
Theory: A7/G# is identical with Amaj7/G# (3rd inversion of Amaj7). A7/F# could be seen as an inversion of A13 with the ninth and the eleventh omitted. A7/F could be seen as an inversion of A13 with the ninth and the eleventh omitted.
A7/G#
Notes: G# - A - C# - E - G
A7/F#
Notes: F# - A - C# - E - G
A7/F
Notes: F - A - C# - E - G