By "album" I'll assume you mean 33 1/3 (1948). So, Bing Crosby - White Christmas would be there right from the beginning (originally recorded in '47). Sinatra, Ellington, Miles ... had plenty of "classic" albums in the 50s. Either your personal bias, ego or lack of history is at play. Kind of Blue was the best selling album of '59. History is out there, even if it isn't trending. Big fan of Chick Webb's orchestra, myself. Buddy Rich before Buddy. 50s Country & R&B also ruled. Every Brothers, Johnny Cash, Ray Charles, etc., etc ... Classic. All 50s.