[color=rgb(51,51,51)][font='YouTube Noto'][size=3]This title-track from Deep Purple's 1971 album "Fireball" is one of the earliest examples of speed metal, and it's quite a fun play on all instruments. The most obvious highlight is the drum part - this is one of very few Deep Purple songs to feature double bass. The intro drum solo isn't even the hardest part, as Ian Paice throws in many fast and difficult fills in throughout the song. The keys (organ) part is also quite difficult, as it requires quick chord-tapping endurance, and it features tough solo in the middle. And right before that solo is the bass solo - you heard that right. The fun of the bass part isn't limited to just the solo, as the part contains many variations and quick HOPO runs. The guitar part, frankly, is quite similar to the bass part, just not as fun. And of course, there's a great vocal part courtesy of Ian Gillan. That's all I have to say. It's hard to talk about vocal parts.[/size][/font][/color]