2011 marked the 20th anniversary of the band, and in march 2010 dmb announced that they would not tour in 2011, for the first time in 20 years. on january 19, 2011, the band announced on their website: "2011 is our 20th anniversary as a band and we want to celebrate by playing music together. while we are still taking the year off from touring, we have decided to plan four multi-day, multi-artist music events that will take place this summer. we will be sending out save the date emails and announcing more information soon but we wanted to share the news with our fans first." on february 22, the first show was announced as being at bader field in atlantic city, new jersey with david gray, ray lamontagne, the flaming lips, o.a.r., and others, and would take place on june 26. the second show was announced on april 7 and would be in chicago with david gray, ray lamontagne, o.a.r., and others, with the flaming lips performing "the dark side of the moon".