La bohème - Act II: Quando me'n vo' (Musetta, Marcello, Alcindoro, Mimi, Rodolfo, Schaunard, Colline) (歌剧《波希米亚人》 - 第二幕：当我独自漫步（穆塞塔、马尔切洛、阿尔钦多罗、咪咪、鲁道夫、绍纳尔、科利纳）)