My end is my beginning, and my beginning my end. - Guillaume de Machaut

Et musique est une science
Qui veut qu'on rie et chante et dance.
Cure n'a de merencolie,
Ne d'homme qui merencolie
A chose qui ne puet valoir,
Eins met tels gens en nonchaloir.
Partout ou elle est joie y porte;
Les desconfortez reconforte,
Et nes seulement de l'oir
Fait elle les gens resjoir.

He who makes songs without feeling
Spoils both his words and his music.

And Music is an art which likes people to laugh and sing and dance. It cares nothing for melancholy, nor for a man who sorrows over what is of no importance, but ignores, instead, such folk. It brings joy everywhere it's present; it comforts the disconsolate, and just hearing it makes people rejoice.