From the recordings The Reto Sessions and Green Room Special

Arion Salazar on Bass (Third Eye Blind, Fungo Mungo)
Isaac Bolivar on guitar (Taking Back Sunday, Happy Body Slow Brain)
Jasper Skydecker on drums (Forrest Day)
Lisa Marie Johnston on acoustic guitar and vocals

RETO PETER engineered and mixed this track. He is a technical wiz. The Network wrote a song about him here: