The guitar riff on Deep Purple's Smoke On The Water has been voted the greatest of all time.
Ritchie Blackmore's iconic four-note tune was followed by Nirvana's Smells Like Teen Spirit and Walk This Way by Aerosmith.
They topped a poll of the top 25 guitar riffs by London's Tech Music Schools to coincide with their 25th anniversary celebrations.
Most of the riffs in the list were written more than 20 years ago, with 16 written in the US and seven in the UK.
Expert John Wheatcroft said: "A quick look around any record shop proves that musical quality lasts."
1. Smoke On The Water by Deep Purple (1973)
2. Smells Like Teen Spirit by Nirvana (1991)
3. Walk This Way by Aerosmith (1975)
4. Purple Haze by Jimi Hendrix (1967)
5. Sweet Child O Mine by Guns N Roses (1987)
6. Paradise City by Guns N Roses (1987)
7. Ace Of Spades by Motorhead (1980)
8. Enter Sandman by Metallica (1991)
9. Under The Bridge by Red Hot Chilli Peppers (1992)
10. Welcome To The Jungle by Guns N Roses (1987)
11. Run To The Hills by Iron Maiden (1982)
12. Walk by Pantera (1992)
13. Johnny B Goode by Chuck Berry (1958)
14. Back In Black by AC/DC (1980)
15. Immigrant Song by Led Zeppelin (1970)
16. Wake Up by Rage Against The Machine (1992)
17. Highway to Hell by AC/DC (1979)
18. My Generation by The Who (1965)
19. 7 Nation Army by The White Stripes (2003)
20. Born To Be Wild by Steppenwolf (1968)
21. Give It Away by Red Hot Chilli Peppers (1991)
22. Paranoid by Black Sabbath (1970)
23. Voodoo Chile (Slight Return) by Jimi Hendrix (1967)
24. Eye Of The Tiger by Survivor (1982)
25. Money For Nothing by Dire Straits (1984)