In this, our final episode of the season, we cover the final two albums in your box set: 1+1, an album Herbie made with his best friend and collaborator Wayne Shorter, and River: The Joni Letters, an album that garnered Herbie the Album of the Year Grammy. We start with Herbie talking about 1+1, and then hear from Wayne, before Robert Glasper explains why the album is two masters in communication. Then we transition to River, where we hear from Herbie, producer Larry Klein, Robert Glasper, and finally Corinne Bailey Rae, who sings on the album and performed with Herbie a number of times after the album came out.