Solresol

Solresol (Solfège: Sol-Re-Sol), originally called Langue universelle (lit. 'Universal language') and then Langue musicale universelle ('Universal musical language'), is a musical constructed language devised by French music teacher and composer Jean-François Sudre (1787–1862), beginning in 1817. His book defining it, Langue Musicale Universelle, was published posthumously in 1866, though he had already been publicizing it for some years. Solresol enjoyed a brief spell of popularity in the latter half of the 19^th century and was sponsored by such figures as Victor Hugo, Alphonse de Lamartine, Alexander von Humboldt and Napoleon III, culminating with Boleslas Gajewski's publication of Grammaire du Solresol in 1902.

Today, there exist small communities of Solresol enthusiasts scattered across the world.