Here denotational always attracts the extensional meaning in the pair, but the other element genuinely varies. See intension for some more discussion.
... 1996 David Clayton-Thomas[?] 1996 Denny Doherty[?] 1996 John Kay[?] 1996 Dominic Troiano[?] 1996 Zal Yanovsky 1997 Gil Evans[?] 1997 Lenny Breau[?] ...