ti is actually used in English when using do, re, mi, fa, sol, la, ti, do to name (and sing) the degrees of the key, regardless of their real values. It's called Movable Do. For instance in D (Ré majeur) the scale would be . do: D (ré) re: E (mi) mi: F#(fa dièse) fa: G (sol) sol: A (la) la: B (si) ti: C#(do dièse) do: D (ré) The seven syllables normally used for this practice in English-speaking countries are: do, re, mi, fa, sol, la, and ti (with sharpened notes of di, ri, fi, si, li and flattened notes of te, le, se, me, ra ). The system for other Western countries is similar, though si is often used as the final syllable rather than ti . In Hindustani (North Indian) classical music, an octave is called saptak and has seven notes called swara. These notes are sa, re, ga, ma, pa, dha, ni (similar to the Western do re mi fa so la ti). The first and fifth notes (sa and pa) have only one variant. The other five notes (re, ga, ma, dha, and ni) have two variants each. G is do. A is re. B is mi. C is fa. D is sol. E is la. F# is ti. G is do. Here you are with the sol-fa notes to the hymn Amazing Grace: A (sol) ma (do) zing (mi) grace (mi)! How (re) sweet (do) the (la) sound (sol) That (sol) saved (do) a (mi) wretch (mi) like (re) me (sol)! I (mi) once (sol) was (mi) lost (mi), but (re) now (do) am (la) found Yes, it actually is sol: it's traditionally written that way when the tonic notes are spelled out, and often referred to colloquially as the Solfa or Solfège scale. That final L is hard to hear Musical notes using syllables: Do, Re, Mi, Fa, Sol, La and Ti. The names of musical notes can also be represented using syllables, as Do, Re, Mi, Fa, Sol, La and Ti. Some languages use Si instead of Ti. These musical note names match the C major scale, the one we sang before. That means that: Do is C; Re is D; Mi is E; Fa is F; Sol is G; La is Word meanings (For the actual origins of the solfège, refer to Solfège .) The lyrics teach the solfège syllables by linking them with English homophones (or near-homophones): Doe: a deer, a female deer, alludes to the first solfège syllable, do. Ray: a drop of golden sun, alludes to the second solfège syllable, re. The Puzzle: RE + MI = FA. DO + SI = MI. LA + SI = SOL. (Replace letters with digits and have the sums be true.) eJWph1.