Club Passim is an American folk music club in the Harvard Square area of Cambridge, Massachusetts. It was opened by Joyce Kalina (now Chopra) and Paula Kelley in 1958, when it was known as Club 47 (based on its then address, 47 Mount Auburn Street, also in Cambridge; it moved to its present location on Palmer Street in 1963), and changed its name to simply Passim in 1969. The Donlins who ran the club during the 1970s pronounced the name PASSim. Bob Donlin said this pronunciation as he welcomed people to the shows with the always-out-of-adjustment mic stand microphone, but those who were unaware often said PassEEM. It adopted the present name in 1994; a combination of the earlier two names. At its inception, it was mainly a jazz and blues club, but soon branched out to include ethnic folk, then singer-songwriter folk.