This dazzling set was originally released in 1991, when Dylan's reputation had sunk about as low as it has ever been. The Bootleg Series was a perfectly judged, and desperately needed, reminder of Dylan's roots, and of the way he'd used them to create so much transfiguring music of his own. It reached from early-'60s talking blues and gutbucket folk to wildly different unreleased versions of the likes of "Subterranean Homesick Blues" and "Like A Rolling Stone" before galloping on to such recent epics as "Foot Of Pride" and "Blind Willie McTell". The great mystery was, why the hell hadn't we heard this stuff before?

Before his Top 10 hit "You're Gorgeous" knocked him off course, Stephen "Baby Bird" Jones had written and recorded over 400 demos on cheap keyboards and guitar. The limited edition, DIY albums he released between 1988 and 1994 (I Was Born A Man, Bad Shave, Fatherhood, The Happiest Man Alive, Dying Happy) consistently topped the indie charts in their day and constitute a cycle of forlorn, heartfelt bedroom symphonies that chronicle unemployed outsider Jones' passage into adulthood. Prolific and poignant, this is how a chart-less Jarvis might have sounded.

That Herbie Hancock is basically an abstract player is the secret of his versatility of style?which is another way of saying that he has no stable sense of taste, being willing to play a line of notes in almost any idiom or sound-world if it fits. It was during his Columbia years that he made his most blatantly commercial music, of which about half of this four-disc set consists. Since it's unlikely that many enjoy such a wide range of approaches, this selection, irrespective of its size, doesn't make much sense. Better to have separated the material into its categories (and audiences).

The highlight of this latest trawl through Axelrod's finest work between 1967 and now is Cannonball Adderley's "Tensity", which, apart from inventing trip hop, features Adderley's most impassioned alto solo on record. Elsewhere, we hear subtly uneasy orchestral pieces ("The Sick Rose," "The Divine Image"), some fine pop-soul from Lou Rawls ("Dead End Street"), a beyond-bizarre silence-filled cover of "Good Day Sunshine" by one Ray Brown, and a couple of ominous pieces conducted by The Man From U.N.C.L.E.'s David McCallum, one of which, "The Edge", turns out to be the basis for Dr Dre's "The Next Episode". Anxious but compelling music.

MONK AT NEWPORT 1963 & 1965 MONK ALL COLUMBIA/LEGACY Remastered with additional tracks, these three albums come from the beginning of Monk's contract with Columbia. In fact, Monk At Newport is effectively a new release since this 35-minute 1965 set is unlisted in standard discographies and was only stumbled upon recently by legendary producer Orrin Keepnews among a pile of old tape boxes. Monk's Dream is the pick of the bunch, Monk's first Columbia release and his career bestseller. Only a little less good, Monk has been unavailable for some time.

ZAPPA PICKS: BY JON FISHMAN OF PHISH BOTH RYKODISC Nerdish and pointless or fanatically worthwhile? The jury is out on the wisdom of asking modern musos to cherry-pick their favourite Zap tracks-anything from "Wind Up Workin' In A Gas Station" to "It Can't Happen Here"?and it probably won't bother to come back. The verdict lies in making connections. If Phish and Primus float your boat then this parlour game could amuse. It's hard to imagine Frank's followers needing these sets, although I could be entirely wrong.

IMPERIAL BEDROOM MIGHTY LIKE A ROSE ALL DEMON Two ideas seem to connect these albums: production and fascism, emotional or otherwise. Armed Forces (1979) was Costello's commercial peak, the home of "Accidents Will Happen" and "Oliver's Army", the latter still sounding like a natural anthem for "the boys from the Mersey and the Thames and the Tyne", despite or because of the Northern Irish unease that inspired it. Costello's sleevenotes reveal the tour infidelities and numb celebrity that fuelled the (self-)disgust in his work at this time, as much as the violence and creeping fascism of late-'70s Britain. He's right, though, to now note his "mistake" in equating the two too heavily (the lyrics mention "lampshades" and "final solutions"), and first attempts at sonic sophistication don't disguise Costello's most simplistic yet superficially enjoyable early album. The Geoff Emerick-produced Imperial Bedroom (1982) is the one where musical ambition and emotional force combined. It was hailed as his best to date; today, starved of such Sgt Pepper-style richness, its baroque majesty still thrills. "Man Out Of Time" sums up a shabby kind of British political disgrace?it was also, Costello reveals, about his collapsing, deception-riddled marriage. Elegant, expansive, knotted with concealed emotional conflict, exciting, beautiful?more like this, please. Mighty Like A Rose (1991) is Imperial Bedroom's even more ambitious sequel, the quasi-classical arrangements and most of the Attractions giving weight to songs now divided between those addressing disappointed love and those criticising our obsession with celebrity and consumer culture. You might not be able to tell, but this is. Costello's angriest record. You also get some fascinating chamber-synth demos and an excellent unreleased track.

LIVE IN THE CITY OF LIGHT VIRGIN (2CD) NEAPOLIS VIRGIN GOOD NEWS FROM THE NEXT WORLD VIRGIN STREET FIGHTING YEARS VIRGIN Kerr and co arose from a post-punk landscape where minimalism and lack were sovereign; when burgeoning fan appeal required them to present this as arena spectacle, simply reverbing and over-amping the jangly guitars destroyed the crude charm of a track like "Promised You A Miracle". And by this time, Simple Minds had been found out; that early, gawky simplicity had given way to congenial dullness.

During the early-'60s The Pretty Things were promoted as still more outrageous than The Rolling Stones, and their wild R&B strove manfully to live up to this image. Hits like "Rosalyn", "Don't Bring Me Down", and "Midnight To Six Man" did the business for the band before they went psychedelic in 1967 with the flower-power classic "Defecting Grey" and the concept album S.F. Sorrow. This three-disc set follows their career, through various line-up changes, to 1999.

WAX CO SINGLES VOLUME 2 (1975-8) BOTH EDSEL If you hit puberty back in the '70s, your first vaguely sexual experience was, perhaps, handing over your 50p to purchase the latest must-have T. Rex single, seven inches of raucous beauty bedecked in a blue-and-red paper sleeve. Someone's had the very fine idea of re-fashioning these period gems on individual CDs and collating them into two box sets, 11 on each. The first roars from "Telegram Sam" through "Solid Gold Easy Action" and "20th Century Boy" to "Teenage Dream", with a bonus outtake from Zinc Alloy to round it off; the second swaggers through "New York City" and "Laser Love", adding a Bolan duet with Gloria Jones. The early B-sides?"Thunderwing", "Cadillac"?are rock at its most supple. Ever.

Ex-Miaow frontwoman Cath Carroll possesses an extraordinary voice. Sensuous, dreamy and capable of uniting diverse influences with a cool grace, here acid folk, Smiths-esque pop, hippie rock and Latino club romps are blessed with Carroll's hypnotic understatement and literate guile. Even the 1980s MOR sheen can't crack the serene spell. Yet beneath the fractured haziness, this is grown-up pop resounding with heartfelt warmth and steely seriousness.

Lee 'Scratch' Perry WONDERMAN YEARS TROJAN Various Artists FLASHING ECHO TROJAN Studio One Story focuses on the label once called 'the Motown of Jamaica'. Featuring the productions of label founder Clement 'Sir Coxsone' Dodd, this is available on CD or vinyl and comes with a 100-page booklet and a three-hour DVD featuring documentary and performance footage. Wonderman Years spotlights Lee 'Scratch' Perry's output between his years of jobbing at Studio One and the foundation of his own legendary Black Ark Studios, capturing the era when roots reggae mutated into dub. Flashing Echo, meanwhile, documents the experimental heyday of dub from 1970 to 1980, with 41 tracks over two CDs.

A trolley-dash of Purple treasures: quad remixes, B-sides, bootleg live tapes, pre-Purple beat boom embarrassments and much more. Few comparable products better illustrate a band's growth, and this is the ultimate testament to just what made Deep Purple that little bit classier than their metallic compadres, Led Zeppelin and Thin Lizzy aside. "Highway Star" and "Lazy" remind one just how unflaggingly inventive an improviser Ritchie Blackmore could be, and how lan Paice was probably Britain's finest straight rock drummer ever. Flamboyant, excessive, expensive, but never less than compelling. Very Purple, really.

The Beatles, The Doors, The Bee Gees, Curtis, Kris and Willie etc, are treated to a first-class passage to heaven thanks to Green's matchless ability to inhabit his material. Buy it for yourself, soul brothers and sisters. The Prisoners IN FROM THE COLD BIG BEAT The Prisoners spearheaded an early '80s Medway garage scene that spat in the eye of synth-pop ubiquity. Their fourth LP was released just as their parent label, Stiff, went bust in 1986. A souped-up basement sweat where Dexys' Stax meets The Hives' urgent swagger. The Charlatans, for one, were eternally indebted. Hamell On Trial MERCUROYALE: THE BEST OF THE MERCURY YEARS EVANGELINE Hamell, with his stinging vocal attack, takes prisoners and then invites them to walk on scorched earth. He's not all spleen; there are black comic moments here. If an anarcho-punk with a Bill Hicks sense of absurdity appeals then Ed's waiting down a dark alley for you. Joe Gibbs & The Professionals NO BONES FOR THE DOGS PRESSURE SOUNDS Combining heavy rhythms with a surprisingly light touch, the powerhouse production duo of Joe Gibbs and Errol Thompson found success with Dennis Brown and Althea and Donna. No Bones..., though, draws on earlier dubs ('74-'79), with Culture's classic "Two Sevens Clash" rhythms forming the backbone. Aim STARS ON 33 FAT CITY Barrow's Andy Turner rolls out his debut mix CD and, true to his production style, it's full of chunky jazz-laced instrumentals. Despite an over-reliance on sister label Grand Central's catalogue, it's the washed-out psychedelia of "We All Together" and "King Biscuit" which prove the pick. Stereo MCs RETROACTIVE ISLAND Retroactive traces Stereo MCs' career from hip hop wannabes to crusty-edged funk apostles. "Lost In Music" is the key track, bridging the transition from their ill-advised early incarnation to the heyday of "Connected" and the triumph of their loose-limbed shuffle.

The abiding concern of the Marsalis brothers has always been that jazz be recognised as the classical music of black culture. Thus it's only natural the first release on their own label should be this homage to classic pieces by four jazz modernists: Ornette Coleman, Sonny Rollins, John Coltrane and John Lewis. The scope is ambitious (Rollins' "The Freedom Suite", Coltrane's "A Love Supreme") and the approach intense. Music to admire, perhaps, more than enjoy.

Horace Andy got fed up waiting five years for Massive Attack to make the follow-up to Mezzanine, so he took himself off to Jamaica to make his own album of classic, ganja-fuelled '70s-style 'conscious' reggae with felicitous echoes of even earlier ska. There's a magnificent cover of Gregory Isaacs' "Night Nurse" which puts Mick Hucknall to shame, and an improbable but enjoyable version of America's "Horse With No Name". For the rest, it's Horace's original one-drop roots rockers (co-written with producer 'Stepper' Braird), as if dancehall and ragga had never been invented.