Yeah, I'm sure you have heard of them before. If you have not, then prepare to get some schooling on what is considered one of the greatest metal bands (or hard rock/thrash metal, depending on your views) to ever have graced the music world.
Metallica, which styles itself a heavy metal band, was formed in 1981 (yeah, way back then!) when vocalist James Hetfield and drummer Lars Ulrich connected through an ad in the local newspaper posted by the latter. The band started in Los Angeles, California, and has been growing ever since. They have included quite the line-up of band members, and have played alongside huge names in metal since.
It is hard to choose just one song from this band -- after all, they have come out with so many that are considered some of their best work. Though not my personal, all-time favorite of Metallica, I think that Enter Sandman is one of the best known songs by the group.
Check it out: