Marshall Crenshawfirst achieved mainstream success with "Someday, Someway," a Top 40 hit in 1982. Success would continue with 1983's Field Dayand 1985's Downtownalbums. Crenshaw also turned heads on the big screen for his portrayal of Buddy Holly in the 1987 film La Bamba.Even if you haven't heard one of Marshall Crenshaw's albums or seen him in concert, odds are that you know his music. He co-wrote the Golden Globe-nominated title track to the movie Walk Hard: The Dewey Cox Story.The Gin Blossoms hit "Til I Hear It From You" -- as later covered by America -- is another key collaboration of his. "You're My Favorite Waste Of Time" has been sung by Bette Midler, Ronnie Spector, Freedy Johnston, and the duo of Matthew Sweet and Susanna Hoffs. Spector has also performed "Communication," "Something's Gonna Happen," "For Her Love" and "Whenever You're On My Mind." S Club 7 recorded the aforeme