年轻时为你写的歌早忘了吧
[nián qīng shí wéi nĭ xiĕ de gē zăo wàng le ba]
'Nian Qing Shi Wei Ni Xie De Ge Zao Wang Le Ba' (The Song I Wrote for You in Youth Is Already Forgotten) reflects on past feelings or memories that have faded over time, implying a kind of bittersweet nostalgia.