Posh and Fab are going back to study at Mariahversity and learning all they can from MasterClass where Mariah Carey teaches the Voice as an Instrument. Classes undertaken in this episode include 'Meet Your Instructor: Mariah Carey,' 'Producing With Your Voice' and 'Lyricism: Write About the Realness.' Also in this episode, a letter from a listener, and the Serif Sisters come to visit. See acast.com/privacy for privacy and opt-out information.