A headlining performance from quirky hard rock act Tool and a once-in-a-lifetime jam session between Led Zeppelin bassist John Paul Jones, guitarist Ben Harper and drummer ?uestlove highlighted the first full day (June 15) of the Bonnaroo festival, which has drawn 80,000 people to rural Manchester, Tenn. Tool's set featured a guest turn from Rage Against The Machine guitarist Tom Morello on "Lateralus."
