The following definition appeared in the program for the first annual
Jammys at Irving Plaza on June 22.
What Is a Jam Band?
Please cast aside any preconceptions that this phrase may evoke. The
term, as it is commonly used today, references a rich palette of sounds
and textures. These groups share a collective penchant for improvisation,
a commitment to songcraft and a propensity to cross genre boundaries,
drawing from a range of traditions including blues, bluegrass, funk,
jazz, rock, psychedelia and even techno. In addition, the jam bands of
today are unified by the nimble ears of their receptive listeners.