This episode is all about music. We talk about playing U2's music at home and U2's musical evolution. Longtime U2start crew member Sergio is our guest, Sergio has been singing and playing U2's music since he was a little boy and can tell you everything about chords, notes and guitars. Does Edge actually need as many guitars as he uses on stage? What goes on in the underworld on stage? And what song does U2 initiate when Edge holds his finger on the D minor? Whut?! Listen and find out!