Different Drum

Can anyone please direct me to the poem that is, I think, about difference, and has the lines in it
' I dance to a different drum ' - I need the source quickly as trying to plan relatives funeral

thanks

www.songlyrics4u.com/ linda-rondstadt/different-drum.html

"If a man does not keep pace with his companions, perhaps it is because he hears a different drummer. Let him step to the music which he hears, however measured or far away."
-- Henry David Thoreau, From "Walden."