Each era of rock music has had its own craftily marketed phenomenon – it was the "live album" in the '70s, "unplugged" recordings in the '90s, and since the late '80s through the present day, the "tribute album." But the early 21st century saw another addition – veteran bands revisiting classic albums and performing them in their entirety. Jethro Tull's most enduring release is largely agreed to be 1971's classic Aqualung, and in late 2004 Ian Anderson, Martin Barre, and their latest Tull mates dusted off the album once more in front of a small audience for XM Radio's Then Again Live series.

Minstrel in the Gallery was Tull's most artistically successful and elaborately produced album since Thick as a Brick and harkened back to that album with the inclusion of a 17-minute extended piece ("Baker Street Muse"). Although English folk elements abound, this is really a hard rock showcase on a par with – and perhaps even more aggressive than – anything on Aqualung. The title track is a superb showcase for the group, freely mixing folk melodies, lilting flute passages, and archaic, pre-Elizabethan feel, and the fiercest electric rock in the group's history – parts of it do recall phrases from A Passion Play, but all of it is more successful than anything on War Child.

Released just as punk was taking hold on the public's imagination in America and making groups like Jethro Tull seem like dinosaurs on their way to extinction, Bursting Out became a seemingly perpetual denizen of the cutout bins for years afterward. However, it happened to be a good album, a more-than-decent capturing of a live Tull concert from Europe. The sound is remarkably good, given the group's arena rock status at the time, and the repertoire is a solid representation of the group's history, going all the way back to "A New Day Yesterday" from their second album and up through 1978's Heavy Horses, with stops along the way for "Bouree," "Aqualung," "Locomotive Breath," "Cross-Eyed Mary," and a compact reprise of Thick as a Brick. Some of these tracks work better than others – the tendency here is to play loud and hard, and sometimes that just doesn't translate well on record; seeing "Locomotive Breath" probably worked better than hearing it.

Jethro Tull’s 1970 classic Benefit will be celebrated in a brand-new 4CD/2DVD set, featuring remixes by Steven Wilson, an abundance of previously unreleased material, packaged within a deluxe hardback book, containing 100 pages of commentary from numerous contributors alongside hordes of images of the band creating and performing their first million-selling album. Benefit (The 50th Anniversary Enhanced Edition) will be out on 5th November. Following the successes This Was (1968) and Stand Up (1969), Jethro Tull returned in 1970 with their third studio album in as many years. Benefit (The 50th Anniversary Enhanced Edition) contains a copious amount of expanded material, building upon the 2013 Steven Wilson remixes. CD3 contains a previously unreleased Steven Wilson remix of Jethro Tull performing at Tanglewood in 1970. Further to that, CD4 contains a newly remastered version of a concert at The Aragon Ballroom in 1970 in mono.

Jethro Tull's second album-length composition, A Passion Play is very different from – and not quite as successful as – Thick as a Brick. Ian Anderson utilizes reams of biblical (and biblical-sounding) references, interwoven with modern language, as a sort of a rock equivalent to T.S. Eliot's The Wasteland. As with most progressive rock, the words seem important and profound, but their meaning is anyone's guess ("The ice-cream lady wet her drawers, to see you in the Passion Play…"), with Anderson as a dour but engaging singer/sage (who, at least at one point, seems to take on the role of a fallen angel).

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.

Benefit was the album on which the Jethro Tull sound solidified around folk music, abandoning blues entirely. Beginning with the opening number, "With You There to Help Me," Anderson adopts his now-familiar, slightly mournful folksinger/sage persona, with a rather sardonic outlook on life and the world; his acoustic guitar carries the melody, joined by Martin Barre's electric instrument for the crescendos. This would be the model for much of the material on Aqualung and especially Thick as a Brick, although the acoustic/electric pairing would be executed more effectively on those albums.

Jethro Tull's best album of the 1990s, a surging, hard-rocking monster (at least, compared to anything immediately before or since) that doesn't lose sight of good tunes or the folk sources that have served this band well. The lineup this time out is Anderson on acoustic and electric guitars, flute, and electric and acoustic mandolins, Martin Barre on electric guitar, Doane Perry on drums, Dave Pegg on bass, and Andrew Giddings on keyboards. The real difference between this and most of the group's output since the end of the '70s lies in the songs, all of which are approached with serious energy and enthusiasm; the lyrics are completely forgettable, but for the first time since War Child, the band sounds like they're playing as though their lives depended on it.

40th anniversary deluxe reissue. The massive 5CD+3DVD ‘Monster Edition’ includes a new Steven Wilson stereo mix of the album, plus a host of associated recordings, also newly mixed by Wilson (CDs 1 & 2). The third disc offers demos, master mixes, rough mixes and more, while CDs 4 & 5 deliver a live set from Germany performed in 1982. The three DVDs included with this Monster Edition offer audio only content, with the first devoted to 5.1 and hi-res stereo mixes of the album associated recordings. The second DVD delivers even more associated recordings in the same audio formats, while DVD 3 is the Live in Germany 1982 concert in hi-res stereo and 4.1 surround sound.