Here’s one of Santana’s influences: http://www.youtube.com/watch?v=v0uS0IhXYLA
The first time I heard "Smooth" on the radio, I told my then teenaged son that it was Santana. He said, no, it was Rob Thomas, of Matchbox 20. I said that might be Rob Thomas SINGING, but there was no mistaking that it was Carlos Santana on that guitar! I was right, and went out and bought the CD!