zhè / shǒu / gē / de / fùgē / chāoguò / le / wǒ / de / zhēnshēng / zuìgāoyīn / suǒyǐ / wǒ / xūyào / jiàngdī / diàoxìng这首歌的副歌超过了我的真声最高音,所以我需要降低调性。The chorus of this song goes above my highest natural-voice note, so I need to lower the key.