For deacdes I believed that vintage was of primary importance in Burgundy. My belief now is that it is important, but there are many exceptional wines produced in relative mediocre years.
A few years ago at Maison Nicolas Potel, we tasted a 1992 Chambolle Musigny Premier Cru Derriere la Grange (behind the barn): bright floral nose, delicious, ready, 94, a great triumph from a poor vintage
and at Remoissenet, we tasted a 1967 Beaune Premier Cru: It was brought up from the cellar where it had remained since bottling. It was served blind and the identity not revealed until after opinions had been offered. It had the rich nose of aged Burgundy and the relatively dark color indicated the wine was not tiring. The wine was elegant, but not at all weak or over the hill. It clearly improved with time in the glass, 93.