The 1950's saw a time of change, reflected in cultural changes that were happening while still holding on to the societal norms of the past.
The 1960's was particularly revolutionary era in terms of popular music, as it saw the formation and evolution of rock.
The 1970's saw the rise of disco, which became one of the biggest genres of the decade, especially in the mid-to-late 70s.
The 1980s saw the emergence of dance music and new wave as disco fell out of fashion, but rock music continued to enjoy a wide audience.
The 1990's saw grunge, Britpop, industrial rock & other alternative rock music which emerged & took over as the most popular of the decade.
Unlike many past decades, the 2000s did not see the creation or emergence of many styles, with the exception of a few indie-related genres.
The 2010's sees R&B making a comeback in terms of popularity, electronica also sees a rise, with EDM & dubstep breaking into the mainstream.