The first track of theirs I heard was Spiral. When I was just starting out as a guitarist, I was talking to one of the elder musicians in my area, ha, was probably in his early 20's, anyway I was curious as to what kind of music I could learn from. He pushed the album Those Southern Knights in my hands said, learn the solo on Spiral.
That was my first introduction to The Crusaders and have been a big fan ever since. I saw them in concert three times here in the UK. I think once was before street life and got to meet the band by the stage entrance and got their autographs. I always remember Wilton's signature because he did the W on it's side, a bit like a number 3 which I thought was really cool. I'll see if I can find the picture.