April 21, 200512:00 AM ET
Heard on Fresh Air

Bill Crawford helped write the liner notes to the new album, I Heard It On the X by Los Super 7. The CD captures the feeling of the music heard on the border radios -- a mi--of rock 'n' roll, R&B, hillybilly and Mexican music.
Crawford is co-author of the book, Border Radio: Quacks, Yodelers, Pitchmen,