当我唱起这首歌我又想你了当我唱起这首歌我又念你了
[dāng wŏ chàng qĭ zhè shŏu gē wŏ yòu xiăng nĭ le dāng wŏ chàng qĭ zhè shŏu gē wŏ yòu niàn nĭ le]
Suggests the act of singing a particular song brings back strong emotions of missing someone deeply, combining both thoughts of longing and melancholy for that person.