n a method of
sight singing music that uses the syllables
do (originally
ut),
re,
mi,
fa,
sol (or
so),
la, and
si (or
ti) to represent the pitches of the
scale, most commonly the
major scale. The
fixed-do system uses
do for
C, and the
movable-do system uses
do for whatever
key the melody uses (thus B is
do if the
piece is in the key of B).