Portraits contains four tracks, including two piano versions of Mythopoetics songs "Swimmer" and "Fortress", as well as piano versions of "Ordinary Talk" and "My Best Self" from her 2020 album The Caretaker.
Half Waif, real name Nandi Rose, says of the EP, "I came to music and to songwriting when I was a kid, singing at a piano. Over the years, I learned to build layered arrangements around the songs, which at times felt like a kind of armor. Returning to these voice and piano arrangements feels particularly vulnerable for me. There's nothing to hide behind. But it also feels like a homecoming, a nod to where I came from. In this form, I saw the songs from a new angle -- it was like we were meeting again after we've both done some growing up. Sometimes we can say more with so much less."