Quite possibly the greatest moment of genius ever from Black Sabbath – and a genre-changing record that influenced generations! The group are at their lean, raw best here – free from any cliches at all, and working in an incredibly heady brew of fuzzy guitar, romping bass, and dark drums – all topped by the instantly recognizable screech of the young Ozzy Osborne! Guitarist Tony Iommi virtually redefines rock use of the guitar with this record alone – and the Oz follows suit with some of the creepiest vocals set to record ever. Titles include the classics "Paranoid" and "Iron Man", plus "War Pigs", "Planet Caravan", "Electric Funeral", "Hand Of Doom", and "Rat Salad". LP, Vinyl record album

A pivotal album for Black Sabbath – a set that further expanded the instrumental palette of their previous work, but all without losing an edge at all – for a record that forever helped cement their role in both the classic and hard rock canons of the 70s! Ozzy is great throughout, and both he and Tony Iommi bring in a bit of keyboard work, but in just the right way – almost adding a more sinister edge to the guitars – echoed by some especially nice acoustic piano at times, particularly on the instrumental cut "Fluff". Titles include the seminal title track "Sabbath Bloody Sabbath" – plus "A National Acrobat", "Sabbra Cadabra", "Spiral Architect", "Looking For Today", and "Killing Yourself To Live". LP, Vinyl record album

A wonderful session by Andrew Hill – recorded in 1968, but issued only briefly in 1981 – and out of print for years! The session is a key one in understanding Hill's work – as it's a bridge between the arch modernism of his early Blue Note sides, and the more soul-oriented playing of the Grass Roots album. The set features wonderful frontline work in the trumpet of Charles Tolliver, and tenor and soprano of Joe Farrell – both players who open up the sound at the same time they're giving it a nice bottom – egged on by the rest of the combo, which includes Victor Sproles on bass and Billy Higgins on drums. The album's an enchanting one – not as dark as early years, but still with a compelling vision that's all Hill's own. Titles include "Dance With Death", "Love Nocturne", "Black Sabbath", "Partitions", and "Fish N Rice". LP, Vinyl record album

A record with a much harder edge than you'd expect from the cover – not the ancient vibe of a medieval crusade, or the religiosity in the title – and instead this searing entry to the hard rock underground at the time! The group have a really heavy Black Sabbath sort of sound – with excellent lead guitars from Bob Cooke, and a sinister sound that has the grooves really dipping down into the depths, pushed even further by evil-edged vocals from singer Lynden Williams. The album's got the raw power of Sabbath's best work – and the whole thing's a killer record that should have been an instant classic. Titles include "Midnight Steamer", "Frustration", "Hooded Eagle", "Primitive Man", "She Came Like A Bat Out Of Hell", and "When The Wolf Sits". LP, Vinyl record album

One of the coolest collections of underground Thai rock we've seen – and it certainly is The Heavier Sound Of the Luk Thung Underground – including a uniquely Thai vision flavored with a Black Sabbath riff, psych makeovers of Thai folklore, and a bunch great tunes that meld Bangkok life with western garage and psychedelia masterfully! All of the tunes are heavy in their own way, but it's by no means heavy in a simple hard rock way – loads of impassioned vocals, astounding percussion, tripped out guitar and other strings and woozy organ keep the arrangements exciting, and the otherworldly aspects play nice with accessible melodies. Titles include "Kuen Kuen Lueng Leung" (the aforementioned heady take on Sabbath's "Iron Man"), "Ruk Kun Samong" by Plearn Promdan, "Pai Joi" by Rung Petchburi, "Nam Mun Pang" by Sroeng Santi, "Dub Fai Kui Gun" by Sroeng Santi and more. 14 massive slabs of heavy Thai psych in all! LP, Vinyl record album

A definite heavy jammer from the Peruvian scene of the early 70s – proof that while some of the late 60s crowd was headed towards soft rock modes, the rest were coming up with an even sharper edge and heavier barrage of guitars! There's a real sense of darkness to the record that matches the group's name and cover – a sound that's nicely allied with Deep Purple or Black Sabbath at their early best, but which also has its own uniquely spooky overtones. Titles include "Tempestad", "Cambiemos Ya", "Martha Ya Esta", "Rio Tonto", "Tema Para Lilus", "Tranquila Reflexion", and "Teimpo En El Sol". LP, Vinyl record album

A heady set from the glory days of the Krautrock scene, and one that's recorded by Conny Plank – but a record that maybe has more of a hard rock vibe overall, one that's very much in keeping with the doom-styled look of the cover! These guys really jam their asses off – not in some sort of spacey experimental way, but instead really romping on the drums, riffing on the guitar, and bustling on basslines that really keep the whole record moving forward – all of which makes for a record that you could easily share with fans of Black Sabbath or Deep Purple – something that might not always be the case for other experimental German work of the time. Titles include "Trouble (parts 1 & 2)", "Delusion", "Dream Of A Drummer", "Time Is Flying", and "What Are You Doin". LP, Vinyl record album