Moods: Aggressive

This isn't a wake-up call, it's a kick in the head. Start your day with some momentum and these alarming alternative rock, punk rock, and hardcore cuts.

Loud and in your face, these dubstep artists embrace the heavier side of the genre to get audiences onto the dance floor.

Not for the squeamish, this collection is the best punk, metal, and indie rock to vent your frustrations to. Get your aggro on.

Looking for trouble? Throw on this playlist of aggressive, rafter-rattling rap, perfect for a rowdy house party that might just end in a brawl.

In honor of their new album, Murdered Love, P.O.D. made a playlist of aggressive rap-metal that'll give you an adrenaline boost for waking up, working out, and kicking ass. Download the new album: http://glob.ly/2o5

Sonny Moore, or Skrillex, to his legions of fans, is the most charismatic and divisive name in the festival-circuit, dubstep scene. Here are some of "Skrill's" favorite tracks, as well as the best from his own catalog and those of his closest contemporaries.

From Sabbath to Isis, some metal bands have always drawn influences from, and been appreciated by audiences beyond the insular metal scene. Think of them as the gateway to metal.

The first wave of punk bands in Britain produced some of the fastest, hardest, and grittiest rock music the world had ever heard. Hold on and get ready for "anarchy in the U.K."

The fiercest, most bludgeoning tracks from the thrash/speed-metal heyday of the 1980s and early '90s. Kick it up!!!

During the 1980s and '90s, D.C. was the place to be for hardcore. Enjoy the finest bands from that time and place, as well as their latter-day incarnations that branched out in different sonic directions.

New York City is the birthplace of punk rock, and like the city that birthed it, the punk rock scene in the late 70s was diverse, contentious, noisy and unlike any other in the world. This is the sound of CBGB's and Max's Kansas City.

With growled vocals and distorted instrumentation, death metal is music at its most intense. Not for the faint of heart.

Take an introduction to all things metal: the loudest, fastest, most brutal genre of rock music, from its roots to the superstars of the form.

Punk rock was born in New York City, but by the late '70s the genre's infectious primitivism had reached cities like Los Angeles and San Francisco, where bands began playing a tougher, thrashier style of punk.

Hair metal (or glam metal) was born on LA's Sunset Strip in the 1980s. Synonymous with heavy riffs, anthemic choruses, blown-out hair, and spandex, hair metal is some of the best party music ever made.

Here's some hard rock motivation to maintain that rock-hard body.

In 1996 Lollapalooza refused to let Ozzy join the tour. BIG MISTAKE. Ozzy started his own festival tour and it rocked really, really hard. These are the bands who've played Ozzfest through the years.

Doom, sludge, and drone metal features heavy guitar riffs, slowed down tempos, and thick chords that create an impenetrable wall of sound. Immense yourself in a new kind of heaviness.

Listen to essential songs by Iggy & The Stooges as well as their greatest influences, contemporaries, and followers.

Spastic, experimental emo with a touch of metal thrown in for good measure. Careful not to shred your vocal chords.

Born of the '90s DIY scene in the Pacific Northwest, the riot grrrl movement features bands that combine aggressive vocals and empowering lyrics with thrashing punk instrumentals.

From Black Sabbath to his solo career to Ozzfest, Ozzy Osbourne has always been an innovative pioneer of hard rock. This playlist includes songs by his closest contemporaries, his indebted followers, and the Prince of Darkness himself.

The heavier side of the alternative boom of the late 1980s and early '90s.

You don't need words to rock! Instrumental metal from the 1970s to today, including classic rock, thrash, post-metal and more. Shut up and listen.

The mighty Metallica has never been shy about acknowledging influences and favorite contemporaries. Explore the band's metal, punk and hard rock roots..

Industrial metal is a harsh, metal-machine music combining the anger and fury of metal with industrial music's blistering speed and pounding beats. Bang your head, factory-style.

Metal's fastest subgenre features sonic experimentation as foreboding as its nihilistic imagery. Release yourself to the grind.

Before grunge entered mainstream consciousness in the early 1990s, it was a vibrant, restless rock scene rooted in the Pacific Northwest. Get on your flannels, ripped jeans and Docs and head back.

Get revved up with these aggressive, killer tunes to keep you focused and sharp while taking down the enemy in your favorite first-person shooter video game.

Modern death metal can have a more prominent melodic side, along with a taste for synthesizers, harmonies and orchestral influences. Explore this Scandinavia-born style that's spread around the world.

Today's most popular electro house tracks from some of the world's hottest DJs.

Today's most popular dubstep tracks from some of the world's hottest DJs.

The American punk underground spawned some of the most creative, fiery and fiercely independent bands of the 1980s. Listen to the groups that paved the way for grunge, emo and pop-punk's commercial ascent in the 1990s.

Agro music for the truly hardcore gamer featuring a free-for-all death match between classic rock, alternative, punk and metal.

As both a musician and a recording engineer (he refuses to use the word "producer"), Steve Albini's raw, aggressive sound has helped shape indie rock since the 1980s. Dive into the surprisingly varied set of artists Albini has recorded over the decades.

Get your aggressions out by jumping (head first) into the passionate emo angst of the Screamo sound and its melodic offspring.