In music, solfège (French pronunciation: [sɔl.fɛʒ], also called solfeggio, sol-fa, solfedge, or solfa) is a pedagogical solmization technique for the teaching of sight-singing in which each note of the score is sung to a special syllable, called a solfège syllable (or "sol-fa syllable"). The seven syllables commonly used for this practice in English-speaking countries are: do (or doh in tonic sol-fa),[1] re, mi, fa, sol (so in tonic sol-fa), la, and ti/si, which may be heard in "Do-Re-Mi" from Rodgers and Hammerstein's score for The Sound of Music, as well as the Robert Maxwell song "Solfeggio". In other languages, si is used (see below) for the seventh scale tone, while its earlier use in English continues in many areas.
There are two methods of applying solfege: fixed do (used in China, France, Italy, Portugal, Spain, Romania, Russia, South America and parts of North America, Japan, and Vietnam) and movable do (used in the United Kingdom, Germany, Indian classical music, and the United States).