" Grateful Dead performances were by design not consciously planned, often reaching their artistic peak when the collective stumbled upon something stunning, when "the music played the band," as it were. Instead of using set lists, the Grateful Dead chose songs by experimenting together until a pulse, rhythm, phrase, or riff emerged from the group, suggesting a song. Their collective, improvisatory musical works communicate felling like any other artwork. "

― , The Grateful Dead and Philosophy: Getting High Minded about Love and Haight