Question: "Toothbrush" is a song by American band DNCE from their debut EP "Swaay" (2015), the song was written by which DNCE member, an American singer and actor?
Sentence (from "Rock Bottom (Hailee Steinfeld song)"): "Rock Bottom" is a song by American actress and singer Hailee Steinfeld featuring American funk pop band DNCE.
Relevant evidence: No