A7#5

7#5 is constructed with the 1st, 3rd, #5th, and b7th notes of the major scale.  An A7#5 chord contains A, C#, E# (F), and G.

We use E# instead of it's enharmonic equivalent, F, because we are raising the 5th (E) by one half step.

A7b5

7b5 is constructed with the 1st, 3rd, b5th, and b7th notes of the major scale. An A7b5 chord contains A, C#, Eb, and G.

For comparison purposes, here is an A7 chord with an unaltered 5th.  7 chords are constructed with the 1st, 3rd, 5th, and b7th notes of the major scale.

D7#5

7#5 is constructed with the 1st, 3rd, #5th and b7th notes of the major scale.  D7#5 contains D, F#, A#, and C.

D7b5

7b5 is constructed with the 1st, 3rd, b5th and b7th notes of the major scale.  D7#5 contains D, F#, Ab, and C.

For comparison purposes, here is an D7 chord with an unaltered 5th. 7 chords are constructed with the 1st, 3rd, 5th, and b7th notes of the major scale.

7 sharp and flat five

Diagram Collection

A7#5