Green Day released a collection of rock music songs with lyrics that relate to a common story.
 Green Day entered the studio and began recording new material in February 2012, later announcing a trilogy of albums titled Uno!, Dos!, and Tr! which would be released in fall 2012
 Other acts that followed the back-to-basics trend were the Canadian group the Band and the California-based Creedence Clearwater Revival, both of which mixed basic rock and roll with folk, country and blues, to be among the most successful and influential bands of the late 1960s

