Musical Notes. A note is a musical concept used to express the height or tone of a sound. Specifically, the notes are names for certain frequencies, which allow to say that a musical sound corresponds to a certain note, it is a combination of several notes, it is between two notes.
The origin of the musical notes dates from the first decades of the 11th century, when the Benedictine monk Guido D'Arezzo used a hymn that used to be sung on the eve of the celebration of San Juan Bautista and took the first letters of each paragraph to create these notes. ... Here is the sung hymn: Ut queant laxis.