Whole note : 4 beats : symbol is an unshaded oval
Half note : 2 beats : stem and an unshaded head
Quarter note : 1 beat : ♩stem and a shaded head
Eight note : 1/2 beat : ♪ stem, shaded head, and a flag
Sixteenth note : 1/4 beat : stem, shaded head, 2 flags
Thirty-second note : 1/8 beat : stem, shaded head, 3 flags
