Nice interview! Correction though: Show is to be held on June 16th, 2012 as said in the interview.
@DRdoubletake you are correct, that is Mr. Wingland aka Whitey Wingland. The banjo player, Ian McFadyen aka Mr. M, is also a teacher at Pacifica High School. The other two are not teachers, just bad ass musicians :) And yes, all the wah wah and distortion effects are coming from the banjo. Thanks for the comments!