noun
song that grows on you; song that gets better with repeated listens
Slang term likening a song to dried squid (スルメ), which becomes more flavorful the more you chew it. Used for songs that are not immediately catchy but become appealing over time.
See also: スルメ
最初はピンとこなかったけど、この曲はスルメ曲だね。
I didn't get it at first, but this song is a real grower.
彼女の新曲はスルメ曲で、聴けば聴くほど好きになる。
Her new song is a slow burner; the more I listen to it, the more I like it.