Do (to rhyme with go)
.The first or tonic note of the solfeggio system of music.
Do, re, mi, fa, sol, la, Italian; ut, re, mi, fa, sol, la, French. The latter are borrowed from a hymn by Paulus Piaconus, addressed to St. John, which Guido, in the eleventh century, used in teaching singing:
2
Sanctë Joannës.
(See Weizius in Heortologio, p. 263.) Le Maire added si (seventeenth century). (See Aretinian Syllables.)