Fennesz recorded the album on a limited equipment setup consisting of a laptop, one Shure SM57 microphone, a few guitars, and a few pedals. Speaking to RBMA in 2008, he recalled that "I think I was inspired at that time, it was a good period of my life and ideas came so easily." The album employs melody and guitar chords, with Fennesz explaining that "many of my colleagues, the people around me, were doing really abstract electronic music – melody was forbidden. I didn’t agree with that at all, I wanted to bring back things I’d been fascinated with in the past, I wanted to combine that with new digital technology, Max/MSP." The album title was intended to be in reference to the 1960s surf documentary The Endless Summer; Fennesz was not aware that it shared a title with a 1970s compilation by The Beach Boys, adding that "I was influenced by their music, but it wasn’t as intentional as it seemed."
Reception
Contemporary response
Writing for NMEin 2001, John Mulvey described the album as "weirdly blissful, possessing an indefinable emotional pull," and noted the influence of "Brian Wilson's most elegiac, wistful music," proving that "experimental new music can understand and revitalise old traditions, that the avant-garde doesn't have to be grey and terrifying." AllMusic critic François Couture stated that the album "puts the emphasis on sunny melodies , but drowns them in glitch textures," summarizing it as "brilliantly conceived and masterfully executed" but also noting that the result "strikes and disconcerts." I. Khider of Exclaim! called it "the electronic album of the year" and stated that "Fennesz processes and manipulates the source material by taking the pulse of the pop tune and rebuilding something deeply sentimental and sweet."
Legacy
Reviewing the album's 2006 reissue, The Boston Phoenixs Matthew Gasteier called Endless Summer "a turning point in experimental electronic music, the moment when melody and cacophony learned to love one another," and labeled it a "fuzzed-out masterpiece" in the lineage of My Bloody Valentine and the Jesus and Mary Chain." Nate Dorr of PopMatters called it "the most pivotal, most accessible, and most strikingly unique point in the Fennesz catalogue so far, and one of the more influential noise albums of the early decade." Discussing the album's impact on electronic music for Resident Advisor in 2007, Joshua Meggitt stated that when compared to Fennesz's "flickering electro-acoustic haze, much of the work by his clicks n' cuts contemporaries sounded po-faced, cerebral and cold Fennesz invested the laptop with a soul hitherto reserved for 'real' instruments." Meggitt also noted the album's references to "the whole discourse of sea-and-surf inspired music, literally evoking the rolling waves with grainy, often turbulent fields of noise," along with the influence of 1950s exotica. In 2017, Pitchfork named Endless Summer the 22nd best ambient album of all time.