A♯ is a musical note.

There are many A♯s in the music store.

I am learning C♯ programming language.

G♯ is the alternative spelling of G-sharp.

E♯ is the alternative spelling of E-sharp.

D♯ is the alternative spelling of D-sharp.

B♯ is the alternative spelling of B-sharp.

F♯ is a musical note.

I have three F♯s in my collection.

I have many C♯s in my collection.