P?P was heralded by early singles “In My Head (ft. Josh Dun),” “Salt and Vinegar,” “Real Thing feat. Elohim,” “Prodigal Daughter.” The tracks have racked up praise, with “In My Head (ft. Josh Dun),” premiering via Consequence, who raved about the “anthemic” new song and praised the accompanying video which takes “…the unusual and avant garde to a new level.” EDM.com celebrated “Salt and Vinegar” for “bringing [Lights’] artistic vision full circle,” while Consequence attested single “Prodigal Daughter” “…is a driving, infectious pop cut that shows off Lights’ enigmatic and soulful voice… she’s never sounded so uninhibited.” Rock Sound hailed the “vibrantly joyous” track and asserted, “it's Lights at her most dominant, confident and unstoppable.”