Pat Metheny - Jaco - live 1977

So, since I have read many messages referring to bassist Jaco Pastorius. write often: (this is not jaco) I repeat "jaco" is the title of the song on a Pat Metheny group album and the person playing in this video is Mark Egan, he was one of Jaco' s students. I hope I was clear once and for all. Thank you