These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Epic Riff: A lot, but "Smoke on the Water" is the most famous example.
Germans Love David Hasselhoff: A strange case. Even though the band never enjoyed more than modest popularity in the US, Mark I was more popular there to the point where UK fans thought they were American, to the point where they earned 10 times as much on a US gig compared to a UK gig. Today the band is more popular among European audiences, especially in countries formerly of the Warsaw Pact.
Nightmare Fuel: The wolf howls at the beginning of "Hush" are pretty damn creepy.
Replacement Scrappy: Steve Morse, if you're a Ritchie Blackmore fan. Also Tommy Bolin when Blackmore left the first time.
Tear Jerker: "Anthem" from Book Of Taliesyn, "Child In Time" (well....the song part of it) from In Rock, "Contact Lost" from Bananascontext It's a short instrumental written by Steve Morse after hearing about the Space Shuttle Columbia disaster. One of the astronauts killed in the disaster, Kalpana Chawla, was a huge Deep Purple fan and Space Truckin' was even played a wake-up call during the mission while in orbit.