Thanks for the article. Here is a link to a free Johnny Winters midi file:
Johnny Winters Midi FileJohnny Winters midi file:

good_morning_little_school_girl

http://midi.homemusician.net/j/johnny_winter/good_morning_little_school_girl.html

The midi file has 9 separate tracks and does a decent job of capturing the song. If you have some sequencing software like Cakewalk, you can isolate each of the nine tracks including the lead guitar.