Accidentals (sharps/flats): C#/Db, D#/Eb, F#/Gb, G#/Ab, A#/Bb
C#
D#
F#
G#
A#
Natural notes (one octave: C4-B4)
C
D
E
F
G
A
B
Enharmonic equivalents: E# = F, B# = C5, Cb = B, Fb = E.