Saw comments on another board: "I don't know if anyone else saw the PBS "American Masters" special on Joni Mitchell last night. It was brilliant. There was an entire segment devoted to the period of time in her life when she hired Jaco as music director (and later, when she wrote lyrics for Mingus) and I found it fascinating. She said this, "Bass players always wanted to come in and put picket fences in my music." That may be the clearest indictment for a root-fifth bass line I've ever heard. Found it will be on philadelphia ch 12 on Sat night 11:30pm, sounds like it could be interesting: http://www.pbs.org/wnet/americanmasters/database/mitchell_j.html Click on the Check local listings at right to put in your zip code to find out when it will play in your area.