Grateful Dead members Bob Weir and Phil Lesh, with Jeff Pehrson, performed the National Anthem, and the Grateful Dead�s Mickey Hart and Bill Kreutzmann lead fans in a special 7th Inning Stretch celebration. In an attempt to set an official Guinness World Record for the world�s largest kazoo ensemble, Hart and Kreutzmann lead more than 8,500 kazoo playing fans in Take Me Out to the Ball Game.
