"Undertone" is a song by Julia Michaels about the struggle to move on from a past relationship. Despite cutting off communication, the person still pops up in certain situations and leaves traces in different places. The narrator finds happiness with someone else, but the memory of the past love always lingers as an undertone. The lyrics express the hope that the memory of the ex-lover would finally leave them alone, but it seems they are always present in some way. The narrator wonders if it's just coincidental or if they are conjuring up the memories themselves. Ultimately, they fall deep and beg for the ex-lover to be forgotten but still can't escape the undertone. The song captures the universal struggle of trying to move on from someone who has left an indelible mark on our lives.
