The Lines, and Who Actually Drew Them

The difference between a reminder and an instruction is a vertical axis.

Neumes float above the text. A mark slanting upwards means the voice goes up, and nothing in the notation says how far, because there is nothing to measure against. Draw a horizontal line and declare it to be the pitch F, and everything changes: a sign above the line is higher than F by a readable amount, and a sign below it is lower.

Add a second line for C. Then more. Now the notation is a grid, and a singer who has never heard the melody can work out what it is.

This is probably the single largest change in the history of Western music, and it is attached to the name of Guido of Arezzo, a Benedictine monk, writing around 1025.

The attachment is partly right and worth taking apart.

What Guido definitely did was write a treatise, the Micrologus, and a set of accompanying texts, in which he set out a working method for teaching singers to read. He claimed a specific result from it: that a boy trained his way could sing a melody he had never heard. Before the method, that was not something anybody could do.

What Guido did not do was invent the staff from nothing. Lines indicating fixed pitches were already in use. A red line for F and a yellow line for C appear in sources connected with the Dialogus attributed to Odo, and the practice of using a line as a pitch reference was circulating before Guido wrote. His four-line staff is a consolidation.

He also did not invent singing syllables out of thin air. The syllables ut, re, mi, fa, sol, la are the opening words of six successive phrases of a hymn to John the Baptist, Ut queant laxis, and the useful property of that hymn is that each phrase begins one scale step higher than the last. Sing the hymn and you have sung an ascending scale with a label on every degree. Whether Guido noticed the property or was taught it, what he did with it was build a teaching method on top.

So the careful statement is: he assembled devices that were partly already available into something that could be taught, and then taught it, and the system spread because it worked.

That is a smaller claim than inventing the staff and a more impressive achievement. Plenty of people have had a good device. Turning a set of devices into a curriculum that produces sight-readers is harder, and it is the thing that actually changed music.

Two footnotes that explain why the system you learned looks irregular.

Ut became do, probably because an open syllable is easier to sing, and in French solfège ut survives in places. And there was originally no syllable for the seventh degree at all, because the hexachord of six notes was the working unit; si was added later from the hymn's final line, Sancte Iohannes, which is why the sequence do re mi fa sol la si has a seam in it.

Both of those are fossils. The modern seven-syllable scale is a six-note medieval teaching device with a repair on the end, and once you know that the oddness of it stops being odd.