drummer

Fig. to believe in a different set of principles. John is marching to a different drummer, and he doesn't associate with us anymore. Since Sally started marching to the beat of a different drummer, she has had a lot of great new ideas.

to be different from other people As long as the schools that are marching to a different drummer just serve poor kids, no one really cares how they try to teach their students.

to behave in a different way or to believe in different things from the people around you While most of the country supported military action, Santini was marching to a different drummer.

Also, march to a different drummer. Act independently, differ in conduct or ideas from most others, as in Joe wanted to be married on a mountain top-he always marches to a different beat, or Sarah has her own ideas for the campaign; she marches to a different drummer. This idiom, alluding to being out of step in a parade, is a version of Henry David Thoreau's statement in Walden (1854): "If a man does not keep pace with his companions, perhaps it is because he hears a different drummer." It came into wide use in the mid-1900s.