society > leisure > the arts > music > musical sound > [noun] > note or tone > head or chest note (3)
a tone obtained when singing in the head voice (head voice, n.); a note sung in this voice; = headnote, n. 2.
Music. A note in the upper register of a person's voice. Cf. head register n. at head, n.1 compounds 4, head voice, n.
a note produced in the lowest register of the voice (see chest-voice n.).