Listen to 我只需要知道 online. 我只需要知道 is a Chinese language song and is sung by 鄧建明 and 顧芮寧. 我只需要知道, from the album 左麟右李十周年演唱會2013 -香港有聲音, was released in the year 2014. The duration of the song is 3:23. Download Chinese songs online from JioSaavn.