After the bluesy This Was, the very diverse Stand Up and the rather inconspicuous Benefit Ian Anderson and Jethro Tull introduced in 1971 this ambitious work to light. The lyrics are in most songs about the relationship to religion and church music there for the first time in this quality a surprising range of hearing. But the multi-part opener Aqualung (rockier start with an almost classic riff, then rather quiet middle section to acoustic guitar and Anderson's "telephone voice", then very skillful guitar solo by Martin Lancelot Barre, anthemic final) was worth the money. After more rocking pieces follow (Cross-eyed Mary), but also very withdrawn acoustic showpieces - sometimes barely one minute (Cheap Day Return). The really strong pieces (except Aqualung) can be found in the second half of the album: My God (acoustic start, furious rock part, freaky flute solo, truly gigantic circuit), Locomotive Breath (biggest hit of the band to this day, very quiet, almost jazzy beginning with piano and guitar, then the over-rockers with no return from the ears to bekommendem reef), finally Wind-Up (again a blend of the finest ingredients that have Jethro Tull to offer). The whole album will be released along with being characteristic Cover (Ian Anderson as "Tramp" Aqualung) as a unified whole. Rightly Tull went with this album on a neverending tour, rightly they were celebrated in the music press (also criticized, probably due to the not uncontroversial texts), is rightly Aqualung probably the best selling Tull album, playing at right Anderson & Co. until now several pieces on each concert, quite rightly, they have recently even a new live version chucked the people. After Aqualung album an increase seemed almost impossible - but she did! The result was Thick As A Brick, but that's another story!