Aqualung 1044

The leap from 1970's Benefit to the following year's Aqualung is one of the most astonishing progressions in rock history. In the space of one album, Tull went from relatively unassuming electrified folk-rock to larger-than-life conceptual rock full of sophisticated compositions and complex, intellectual, lyrical constructs. While the leap to full-blown prog rock wouldn't be taken until a year later on Thick as a Brick, the degree to which Tull upped the ante here is remarkable. The lyrical concept – the hypocrisy of Christianity in England – is stronger than on most other '70s conceptual efforts, but it's ultimately the music that makes it worthy of praise.