As any fan of the live Grateful Dead experience will tell you, improvisation is the key to the way the group puts their music over on stage – long jams that are filled with musicianship that just got better and better over the years, and which can lead to a very heavenly experience for concertgoers at their shows! Yet this book also gets past some of those overused tropes and really digs deeply – viewing their improvisation from a musical perspective, and showing the larger cultural perspective that such practice created within the subculture of their fans and listeners. There's a very strong focus on the role that improvisation played right at the start of the group's career – especially when they were in a mind-altering, spiritual mode. Softcover edition is 294 pages. Book