Sara Bareilles, Nadia DiGiallonardo, Rich Mercurio, Lee Nadel, Yair Evnine, Rich Hinman and Jamie Edwards. With Sara Bareilles, the band engaged in a deeply collaborative process to create the arrangements for the Waitress score. A group that includes singers, multi-instrumentalists, writers, and producers from all different corners of the pop and theatre world, they’ve each contributed their own unique ingredients to the pie.