noun
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.
彼女の愛唱歌は「ふるさと」です。
Her favourite song to sing is 'Furusato'.
みんなで愛唱歌を歌いましょう。
Let's all sing a favourite song together.