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song one likes to sing; (one's) favourite song
祖母の愛唱歌を聴くと懐かしくなる。
I feel nostalgic when I hear my grandmother's favourite song.
卒業式で愛唱歌を全員で歌った。
Everyone sang the beloved song at the graduation ceremony.
その愛唱歌は世代を超えて親しまれる。
That beloved song is cherished across generations.