Blues, rock, world, bluegrass, folk, R&amp;B, electronica, jazz, swing, and country: You name the music, WEVL, the Mid-Souths only listener-supported, independent radio station, plays it  and has for 32 years. WEVLs volunteer deejays know the score: What they air they program themselves. Hear the difference. Flyer readers do. So does singer-songwriter Alejandro Escovedo, whos playing a WEVL benefit at the Hi-Tone on October 27th. - ALEX HARRISON