On the origin of music notes

This morning in 1ºESO A we held an interesting conversation about the origin of music notes. As I told you, they come from an hymn called Ut queant laxis.

Ut queant laxis or Hymnus in Ioannem is a plainchant hymn to John the Baptist written by Paulus Diaconus, the eighth century Lombard historian.

It is notable in that each of the first six musical phrases of the first stanza of the hymn begins on a successively higher note of the hexachord. The first syllable of each hemistich (half line of verse) has given its name to a successive note, since these syllables coincide with the ascending note pattern. The last line, Sancte Ioannes, breaks the ascending pattern (for musical rather than pedagogic reasons) and begins with the note previously sung to "sol".

Ut is now mostly replaced by Do in solfège due to the latter's open sound, probably inspired by the word Dominus (Lord). The seventh note was not part of the medieval hexachord and does not occur in this melody, and it was originally called "si" from Sancte Ioannes, but was later renamed "ti" to allow each name to start with a different letter. The use of Ut queant laxis to name the tones is usually attributed to Guido of Arezzo in the eleventh century.

You can find more information about this topic in the wikipedia, http://en.wikipedia.org/wiki/Ut_Queant_Laxis

Isn't this interesting? I consider it is really fascinating.