Led Zeppelin is the most influential rock act ever, according to a poll taken by the U.K. Internet radio station Planet Rock.

With listeners casting thousands of ballots over the first three weeks of February, Zeppelin garnered one-fifth of the votes. Here's the full Top 10:

1.Led Zeppelin
3.Black Sabbath
4.Pink Floyd
5.Deep Purple
6.Jimi Hendrix
7.The Rolling Stones
8.The Who
10.David Bowie