The Chetboard

So I've been practicing Yakety Axe and I really like that song and Ive got all the part learned but on some youtube clips Chet plays a third part and i love his improvising in it does any body have a tab for this third part.

http://www.youtube.com/watch?v=BK7T4LHjln4 the part im talking about starts at 1:02, in this video.

http://www.youtube.com/watch?v=b8RGpadIwtY and starts on 0:51 in this video.

Thanks Yall.