Summer Camp Music Festival
The Summer Camp Music Festival is a multi-day music festival created by Jay Goldberg Events & Entertainment and held annually on Memorial Day Weekend at Three Sisters Park in Chillicothe, Illinois. The event typically attracts around 20,000 visitors, of which between 8,000 and 10,000 arrive before gates open. In 2014, it was listed as one of the top 40 music festivals in Rolling Stone and in 2015 on Rolling Stone's 50 Must-See Music Festivals.
Rob Derhak of Moe, 2008 Summer Camp
Jack Cinninger of Umphrey's McGee, 2009 Summer Camp
A jam band is a musical group whose concerts and live albums substantially feature improvisational "jamming." Typically, jam bands will play variations of pre-existing songs, extending them to improvise over chord patterns or rhythmic grooves. Jam bands are known for having a very fluid structure, playing long sets of music which often cross genre boundaries, varying their nightly setlists, and segueing from one song into another without a break.
Blues Traveler performing in 2008
Phish is an example of a jam band.
The Derek Trucks Band
Grateful Dead's Jerry Garcia and Mickey Hart performing on 11 August 1987 at the Red Rocks Amphitheatre near Morrison, Colorado