The 70s was a massive decade for Rock (or Metal as it was known back then)
Metal
Budgie
The Who, AC/DC-(With the legend Bon Scott), Black Sabbath, Deep purple, Areosmith, Alice Cooper.
Rock
Don Mclean
Neil young,The Eagles, Billy Joel, Simon & Garfunkel, James Taylor and Bob Dylan was still kicking around.
Jazz
Herbie Hancock
[small]This is awesome![/small]
Miles davis, Weather report, Buddy rich
Funk/R&B
The Meters
James Brown, Parliament-Funkadelic, Bob Marley, and Sly And The Family Stone
Other
Frank Zappa, Devo, Zz Top, Eric Clapton, The Knack, ALL OF DISCO, Supertramp, Pink Floyd,
Jethro Tull, Wings, Motorhead, Queen, Elton John, Iron Maiden, T rex, David Bowie, Cat Stevens, 10cc, The Ramones and Sex Pistols
It was also the year that Minimalism composers Philip Glass, Steve Reich and Michael Nyman got their start. Not a big fan but they were important.