The band's heyday ran from 1973 to 1981 and they played up to 320 shows a year They developed a reputation for their complex use of four-part vocal harmonies, the multi-instrumentality of the members, and extended concert jams.
The band's heyday ran from 1973 to 1981 and they played up to 320 shows a year in every state in the union except Hawaii, which was inaccessible to their distinctive Greyhound Scenic Cruiser Bus. They also developed a reputation for their complex use of four-part vocal harmonies, the multi-instrumentality of the members, and extended concert jams.