Late 1960's - Early 1970'sThe birth of heavy metal. Groups like Black Sabbath, Led Zeppelin and Deep Purple were the first heavy metal bands.
Late 1970'sThe rise of the New Wave Of British Heavy Metal (NHOBHM). Bands like Iron Maiden and Judas Priest become very popular.
1978Van Halen released their debut album. This began the Los Angeles/Sunset Strip scene, and many bands would come out of this era, including Motley Crue and Quiet Riot. The so called "hair bands" like Poison, Warrant and Ratt came from that scene as well.
The Who's Keith Moon died.
Bands formed this year: Dokken, Ratt, Whitesnake
A sample of heavy metal albums released in 1978:
Black Sabbath - Never Say Die
Judas Priest - Stained Class
UFO - Obsession
1979The German band Accept releases their self-titled debut album. They are considered to be the first European power metal band.
Ozzy Osbourne was fired from Black Sabbath and replaced by Ronnie James Dio.
Bands formed this year: Europe, Hanoi Rocks, Trouble, Venom