In music, solfège or solfeggio, also called sol-fa, solfa, solfeo, among many names, is a music education method used to teach pitch and sight singing of Western music. Solfège is a form of solmization, and though the two terms are sometimes used interchangeably, the systems used in other music cultures such as swara, durar and Jianpu.
Syllables are assigned to the notes of the scale and enable the musician to audiate, or mentally hear, the pitches of a piece of music which he or she is seeing for the first time and then to sing them aloud. Through the Renaissance (and much later in some shapenote publications) various interlocking 4, 5 and 6-note systems were employed to cover the octave. The tonic sol-fa method popularized the seven syllables commonly used in English-speaking countries: do (or doh in tonic sol-fa), re, mi, fa, so(l), la, and ti (or si).
There are two current schools of applying solfège:
1) fixed do, where the syllables are always tied to specific pitches (e.g. "do" is always "C-natural") and
2) movable do, where the syllables are assigned to scale degrees ("do" is always the first degree of the major scale).
Students that are taught this method learn to sight read 2 to 3 times faster than those who do not. All learning and sheets are included at no extra cost.