The Mars Volta
The album features contributions from Autolux drummer Carla Azar, upright bassist Ken Wild, and The Mars Volta guitarist Omar Rodríguez-López, with Frusciante noting, "Carla from the band Autolux plays drums. I loved having a feminine energy. My friend Omar Rodriguez-Lopez of the Mars Volta played some guitar. He and I do these solos together where we're using the same amp at the same time."