"Quando m'en vo' " is a soprano from an Opera composed by Giacomo Puccini.
"Quando m'en vo' ", also known as "Musetta's Waltz", is a soprano aria in 3/4 time (a waltz) from Act 2 of Puccini's opera "La bohme". 
La bohme (] , ] ) is an opera in four acts, composed by Giacomo Puccini to an Italian libretto by Luigi Illica and Giuseppe Giacosa, based on "Scnes de la vie de bohme" by Henri Murger. 
