The duo's first masterpiece, Parsley, Sage, Rosemary & Thyme was also the first album on which Simon & Garfunkel, in tandem with engineer Roy Halee, exerted total control from beginning to end, right down to the mixing, and it is an achievement akin to the Beatles' Revolver or the Beach Boys' Pet Sounds album, and it is just as personal and pointed as either of those records at their respective bests. After the frantic rush to put together an LP in just three weeks that characterized the Sounds of Silence album early in 1966, Parsley, Sage, Rosemary & Thyme came together over a longer gestation period of about three months, an uncommonly extended period of recording in those days, but it gave the duo a chance to develop and shape the songs the way they wanted them. Overall, Parsley, Sage, Rosemary & Thyme was the duo's album about youthful exuberance and alienation, and it proved perennially popular among older, more thoughtful high school students and legions of college audiences, across generations.