American vocal harmony group formed in 1952 in Canonsburg (Pennsylvania) by George Mantalis (born December 22, 1934 - died December 10, 2016, Pittsburgh, Pennsylvania, USA), James Gregorakis, George and Michael Mahramas. Originally the quartet were horn players in a Bobby Vinton' Orchestra. Then, in 1953 briefly naming themselves [a=The Four Keys], making vocal accompaniment to Ella Fitzgerald. Their first single with [l=Epic] was in 1954 We'll Be Married (In The Church In The Wildwood), but the group had to wait until 1957 for earning a gold record with their biggest hit: Shangri-La, which reached # 11 in the US charts, .