While notorious in the Chicago streets, RP Boo's music had been unfairly confined to a few white labels and self-released mixtapes until his two archival Planet Mu LPs ‘Legacy’ and ‘Fingers, Bank Pads & Shoe Prints’ introduced broader audiences to his sonic history, some of it fifteen years after it was first recorded. ‘I'll Tell You What’ is the next step in his mission, and the first time he's released an album of contemporary material. The title, a favorite maxim of his, welcomes listeners to sit down and let him narrate in the unforgettable abstract fashion he's known for. He explores familiar motifs such as the cosmos, movement, and opposition, using densely interwoven vocals, unpredictable percussion, and evil humming bass as his tools of choice.