Beginning life in 1846 as a steam-engine repair shed, The Roundhouse has over the years hosted some of London's biggest musical events, and has played host to some of the craziest rock 'n' roll bands the world has had to offer us. With every brick in the very fibre of the building having rocked harder than the halls of hell, tonight's line-up is surely one of the best the venue has had on offer since 1975?

Opening tonight's frivolity is Black Spiders, our own local London boys who don't just warm up this mixed bag of very unlikely Ozzy fans, but literally set them on fire. For anyone that has seen the Spiders before, they were on top form as usual and for those that haven't yet had the pleasure of being aurally masturbated by these five guys, they blazed through tracks like 'St. Peter' and 'Stay Down' that left the crowd chanting, "Spiders, Spiders". Black Spiders seem to be playing all the top festivals this summer so get your rocking ass to a field and bear witness to them tearing up a stage like only they know how.

Texan heavy metallers, and recent touring buddies to Metallica, The Sword darken the stages in record time - due mainly to this venue and its damn quick on stage turn arounds!! Being something of a Sword virgin I watched with mixed feelings, as although I loved the sound of their music, I was also just a little bit bored of just watching four guys playing instruments on stage. I think I'll have to go out and buy one of their albums and really get into to their music before I go and see them live again, as their stage presence didn't exactly have me captivated, and at times the setting sun from the 1^st floor balcony was a much bigger visual attraction.

Almost single handily revolutionising the heavy metal genre, Ozzy Osbourne takes to stage after a 3 minute count down on screens of past iTunes festival footage. Mentioning earlier that the crowd was a mixed bag of unlikely Ozzy fans, this was confirmed by their response in booing every previous band shown except Oasis and Franz Ferdinand and I'm left wondering if this competition format of winning tickets is such a great idea considering that most people (not just real fans) are just in for freebies, and suddenly I'm also wondering what kind of reception Ozzy himself is going to receive. Thankfully it was deafening to say the least! Opening with 'Bark At The Moon' and getting the audience to howl set the tone to a very fiery set from the dark side.

Tonight's line-up has two new members, percussionist Tommy Clufetos (ex Ted Nugent / Alice Cooper) performs one of the hottest drumming solos I've ever seen, laser beams, double footwork, arms flying faster than a million flying ants to one light bulb. Legendary Gus G of Firewind is also along on lead guitar and renders the crowd speechless with his solo and playing a Rocktron Banshee Talk Box that turned him robotic like vocally whilst playing the same sounds on his guitar.

Playing a set interspersed with solo and Black Sabbath classics such as 'Mr Crowley', 'Shot In The Dark', 'Rat Salad' and 'Fairies Wear Boots', as well as new track 'Let Me Hear You Scream', I'm totally blown away at the copious amounts of energy Sir Ozzy of Osbourne still has. Constantly dipping his hair in a bucket of water before throwing the contents over the audience, he is what everyone has always said he is, an utter legend.

Ending the night on with a four-song encore that closed with the inevitable 'Paranoid', Ozzy along with his band of musicians has been responsible for one of the best nights of my life.