Dave Bosio, 20, an aspiring singer-songwriter who plays guitar on the streets of Albuquerque, dreams of one day playing for spare change on the streets of Paris. 'To play on the Champs-Elyses, that'd be a dream come true,' Bosio said Monday. 'Or someplace along the Left Bank. That'd be so much better than Copper Avenue.' Bosio then launched into an off-key version of Bob Marley's 'Redemption Song.' 