A function or operator can thus be described as unary, binary, ternary,etc. Terms such as 7-ary or n-ary are also used.
... 1980 Paul Anka 1981 Joni Mitchell 1982 Neil Young 1983 Glenn Gould 1986 Gordon Lightfoot 1987 The Guess Who[?] 1989 The Band 1990 Maureen Forrester[?] ...