Itchycoo Park, 1964-1970--the second volume of Sixties British Pop, Outside In--explores how London songwriters, musicians, and production crews navigated the era's cultural upheavals by reimagining the pop-music envelope. As the generation born during the postwar years approached adulthood, they gravitated to music that resonated with their lives. Mainstream pop remained true to the basics, but some British artists conjured up sophisticated hybrid forms by recombining elements of jazz, folk, blues, Indian ragas, and western classical music while others returned to the raw essentials. Encouraging these experiments, youth culture's economic power challenged the authority of their parents' generation. Improved amplification opened larger and more lucrative concert venues while the spread of studios with enhanced technologies allowed artists and production crews the means to improve performances and recordings. British charts began to reflect London's postcolonial heritage as groups such