Nellie 'Tiger' TravisWhen Nellie "Tiger" Travis sang "Wang Dang Doodle" - Koko Taylor's signature hit - she could never hit the high notes in the chorus: "We gonna pitch a wang dang doodle all night long."

"I always did it down low," Travis said in a recent phone interview. Then came Taylor's funeral in 2009.

"I hit the high note for the first time ever," Travis said. "That day, it just came out like that. ... I do it all the time now. ... I can't explain it. I don't know if it was a spirit thing, or if I was just so full until it just came out ... . I just know I hit it now."