Ab
G sharp is located to the right of G on the piano keyboard. It is the black key immediately to the right of the white key G.
A flat
Look on this picture http://musicianinyou.com/resources/Piano%20Keys.GIF
Its a kind of note in music. Its also in the G-scale of g sharp it is on the grand staff on piano.
To play a G sharp major chord on the piano, place your right thumb on the G sharp key, your middle finger on the B key, and your pinky finger on the D sharp key. Play all three keys simultaneously to sound the G sharp major chord.
The correct fingering for playing a G sharp on the piano is to use your thumb (1) for the G key and your middle finger (3) for the black key to the right of it.
To the left, G natural. To the right, A natural (on a piano keyboard).
Okay, there are 88 keys altogether. 88-36=52!
if you are talking about notes: c c sharp/ D flat d d sharp/ e flat e f f sharp/ g flat g g sharp/ a flat a a sharp/ b flat b etc...
g sharp would be g sharp or a minor. d sharp would be d sharp or e flat. a sharp would be a sharp or b flat. c sharp would be c sharp or d flat. f sharp would be f sharp or g flat. e sharp would be e sharp or f slat for which there is no such note. and g natural would be g natural.
G sharp (enharmonic A flat).
c sharp b diminished g major a minor c sharp