As The Sound of Music hints at, solfeggio or solfege is a method of naming pitches. It works by assigning a syllable to each note of the musical scale. So rather than, say, naming a C major scale as C D E F G A B C, you can name it as do re mi fa sol la ti do.
Similarly, which countries use Do Re Mi? In traditional music theory, most countries in the world use the solfège naming convention Do–Re–Mi–Fa–Sol–La–Si, including for instance Italy, Portugal, Spain, France, Romania, most Latin American countries, Greece, Albania, Bulgaria, Turkey, Russia, and all the Arabic-speaking or Persian-speaking countries.
Additionally, do re mi fa so or sol?
Do-re-mi-etc. is sol-fa or solfege. Sol-fa represents a major scale, with Do being the first note, Re being the second, and so on.
Why is it called Do Re Mi?
Why are Notes of the Tonal Scale Called Do, Re, Mi etc.? Solmization, or the practice of assigning syllables to the different “steps” of the scale, originated in ancient India. He assigned the notes of the scale—C, D, E, F, G, A, B, C—a syllable: Do, Re, Mi, Fa, Sol, La, Ti, Do.