Led Zeppelin is so much a part of rock ’n’ roll, it’s hard to imagine a time when the band didn’t exist… The premise of the new documentary “Becoming Led Zeppelin” thus arouses curiosity — how exactly did Led Zep happen? — and also strikes a cautionary note. The film narrowly concerns the creation of the band and its first two albums, both released in 1969…  It’s the musical equivalent of a superhero origin story. – Toronto Star

“The master-musicianship that the press initially overlooked, and which the tales of bad behaviour obscure, is front and centre here.” – Financial Times

“The main attraction is finally the music, of which there is plenty.” – RogerEbert.com