noun
hit song; best-selling song
Refers to a song that has achieved widespread popularity and high sales or streaming numbers. The gloss 'best-seller' is understood in the context of music.
彼女の新しいヒット曲がラジオでよく流れている。
Her new hit song is often played on the radio.
このアルバムにはヒット曲がたくさん入
This album contains many hit songs.