Influences can run deep without being worn on the sleeve. For instance, take Jenny Lewis. Now on tour with real-life boyfriend Jonathan Rice as one half of the duo Jenny & Johnny (guess which half?), Lewis revealed to the A.V. Club that she learned a crucial part of songwriting by listening to a certain diva from an earlier generation. "I'm a big Barbra Streisand fan," she says. "And I think the first time I ever heard a melody was on one of her records." We never would've guessed. No, seriously -- we never would've guessed.