favourite song; song one likes to sing
Refers to a song that someone particularly enjoys singing, often used for personal favourites or group sing-alongs.
Her favourite song to sing is 'Furusato'.
Let's all sing a favourite song together.
Compound of 愛 (love) + 唱 (sing) + 歌 (song). The exact historical derivation is uncertain, but the spelling is conventionally associated with the meaning.