it was the upcoming generation of writers who "got it immediately". In his article for The Village Voice, Richard Goldstein described Revolver as "a revolutionary record" that was "as important to the expansion of pop as was Rubber Soul", and one that demanded that the genre's "boundaries... be re-negotiated". He added: "it seems now that we will view this album in retrospect as a key work in the development of rock and roll into an artistic pursuit ..." Another writer identified by Turner, Jules Siegel, likened Revolver to works by John Donne, John Milton and William Shakespeare, saying that the band's lyrics would provide the basis for scholarly analysis well into the future. Recalling Revolvers release in his book Revolution in the Head, Ian MacDonald says that the Beatles "initiated a second pop revolution – one which while galvanising their existing rivals and inspiring many new ones, left all of them far behind". In a February 1967 review, Hit Parader declared: "Revolver represents the pinnacle of pop music. No group has been as consistently creative as the Beatles, though the [Lovin'] Spoonful and Beach Boys are coming closer all the time ... Rather than analyze the music we just suggest that you listen to Revolver three or four times a day and marvel ..." Later that year, in Esquire, Robert Christgau said the album was "twice as good and four times as startling as Rubber Soul, with sound effects, Oriental drones, jazz bands, transcendentalist lyrics, all kinds of rhythmic and harmonic surprises, and a filter that made John Lennon sound like God singing through a foghorn". Retrospective assessments In the 2004 edition of The Rolling Stone Album Guide, Rob Sheffield wrote that Revolver found the Beatles "at the peak of their powers, competing with one another because nobody else could touch them"; he described it as "the best album the Beatles ever made, which means the best album by anybody". Writing for PopMatters that year, David Medsker said that Revolver showed the four band members "peaking at the exact same time", and he deemed it to be "the best of the bunch, the letter that went unanswered" among a series of reciprocally influential musical statements exchanged between the Beatles and the Beach Boys over 1965–67. In a 2007 appraisal of the band's albums, Henry Yates of Classic Rock magazine paired it with Sgt. Pepper's as the two "essential classics" in