Who sings if you were a rich man?

"If I Were a Rich Man" is a song from the 1964 musical Fiddler on the Roof, composed by Jerry Bock with lyrics by Sheldon Harnick. In the musical, the song is performed by the character Tevye, a poor Jewish dairyman. The song expresses Tevye's longing for a better life and his frustration with his own poverty.