It’s easy to get lost in the music of Widespread Panic. During the past 25 years, the popular jam band has risen to become a leader of the genre and every show leaves the crowd mellowed out and high on life. The group celebrates its milestone with a three-night stint at the National, and because the band prides itself on never playing the same show twice, each night is guaranteed to be a different experience. Widespread Panic plays the National from Sept. 19-21 at 7:30 p.m. $45. 612-1900.