Josh Groban / Mike Wells Javier Limon / Mary Mary / Rihanna / Michael James / David Bowie / Jonathan Wyner Mike Wells Javier / Kirk Franklin / Edwin McCain / Eminem / Sara Bareilles / Tony Sly / Sterling Sound Tame Impala / Robben Ford / Rahsaan Roland Kirk / Kiri Te Kanawa / Mike Wells Mastering Nicki Bluhm / Charlie Wilson / James Taylor / / /