I suppose I shouldn't add it to the PPC mix thread, since it relates to Boarders, not agents, but listen to this beauty.

My favorite online musician is Miracle of Sound. He does songs for video games, TV shows, movies, all that, along with his original songs and they're all amazing.
My current favorite song by him is Evacuate

I also spend a good deal of time listening to a number of folk musicians like Ed Miller, Jed Marum, Tullamore, Jil Chambless, and Scooter Muse. There's generally not too much of their music online, but they're wonderful performers and their albums are great. I'll see if I can track down some of the better quality YouTube videos later.

Hmm, I think everybody else pretty well covered my other suggestions, so that's about it for me.

They Might Be Giants recorded a song every week of last year, and it is great. Of them, my favorite would be Music Jail.

Link to the playlist: https://www.youtube.com/watch?v=AF_QlfphnTo&list=PLRi4SWBgYP1c-7z4ss0X4M81P6jFaMPkM

Ode to Sleep, Migraine, Car Radio, and Heavydirtysoul specifically. When I can sing/rap Ode to Sleep perfectly, I shall die happy.

And, because it's me and Christianity must be involved somehow, have some Ghost Ship in your ear. This song got me through a bit of a tough spot, actually; and it just sounds nice.

-Alleb

Alright. I'll shoot.

Scenes From an Italian Restaurant by Billy Joel. Bit like a jazzy Bohemian Rhapsody, what with all the different styles blended in.

By Satchmo himself, Butter and Egg Man.
I bloody love this song.

Jethro Tull, Broadsword and the Beast.

Also look up Habanero Reel.

If you like After Forever, might I suggest:

Wish I Had an Angel, by Nightwish with Floor Jansen on vocals

Alpenglow by Nightwish

Other Suggestions:

FullMoon by Sonata Arctica

The Highwayman by Loreena McKennitt

Highwayman by the Highwaymen

Helmethead by Great Big Sea

Prepare yourself, I've got suggestions for you.

First in the video game department... You know what, I'll link you to the TV Tropes page for Awesome Music for SMT. If I listed all the tracks from Shoji Meguro, I would still be here tomorrow. And I'll finish here (I think), with Calamity Trigger's opening, Continuum Shift II's opening, and a remix from Kaze yo Tsutaete.

And now for English songs... Of course I'll mention Jeff Williams. (how many souls must we sacrifice to get this Volume 3 soundtrack record?) I'll continue here with Katie Melua and Gabrielle Aplin. The Killers are also something to hear. And finally (I think) I See Fire and The Last Goodbye while I at it.

Oh, et puisque je suis français, here are Alexandre Poulin (Qui on Devient), Lyynda Lemay (La veilleuse), Renan Luce (La Lettre), Tit' Nassels (Emmène Moi), Rose (L'Acide), PenOfChaos (Sauvons les Rolistes), Bensé (Au Grand Jamais), Pep's (Liberta)... Maybe I should stop for now, or I'll never post this. (If/When I think about something else, I'll come back...)

While not quite as iconic as E1M1, DOOM II's first level has an awesome tune that played as you built your arsenal while Running from Evil.

If you're not looking for vidya gaem tunes, then I suggest checking out Devotchka's works. My favourites are The Alley, The Clockwise Witness, and Queen of the Surface Streets.

First up, a song from a Unitarian Universalist folk band (file that one under "phrases I never thought I'd type") that I find particularly relevant to today's political climate, Lady of the Harbor by Brother Sun. It's off their second album, "Some Part of the Truth." If you prefer to listen to a new band's discography in order, my favorite song from their first album is "Love is the Reason."

Second, if you're into metal covers, FamilyJules7x's "Replay" is a medley of songs from various iconic video games...done as metal songs. And holy shit, it is AWESOME. Special mention goes to the Punch-Out theme, the original Zelda theme, the Goldeneye 007 intro, the chill Animal Crossing music, Hyrule Field from Twilight Princess, and "Suicide Mission" from Mass Effect 2 (which literally sounds like it should be playing in a dramatic action movie trailer with one guy reaching for his falling friend yelling NOOOOOOOOOO). Also check out his Zelda medleys, because they're also awesome.

Speaking of Zelda music, I also recommend the Kakariko Village theme from Ocarina of Time. To me, this song feels like coming home and watching the sunset after a long, satisfying day. It's not quite as iconic or pretty or awesome as some other Zelda tunes, but I like it anyway.

Lastly, "Arwen's Vigil" by The Piano Guys. Absolutely beautiful and evocative; you can almost see her in Rivendell when you hear this song.

The first link is wrong, it links to some stuff from the LOTR soundtrack (In Dreams to be specific), not that I mind.

Personally when I'm writing I love to listen to Two Steps From Hell: https://www.youtube.com/user/TwoStepsFromTheMusic/videos, to the point where I've given characters specific tracks that I listen to whenever I'm trying to write them. They're, well I'm not quite sure how to describe them besides epic.

The second plug from me is slightly different to the previous one. They're a power metal band from Sweden called Sabaton, almost all of their songs are about historical events, battles or people, covering everything from the well known (Warsaw Uprising, Operation Neptune, Battle of Passchendaele) to the relatively unknown (The Winter War, The Battle of Wizna, The Smoking Snakes) and everything in between. Unfortunately they don't really have a central channel on Youtube so just look them up. If people want links to specific songs I can provide them.

For starters, trad thrash with Holy Grail.

Next, folk-punk with Frank Turner

Off the top of my head, search these artists:
Waterflame89
Phyrnna
Whittaker Trebella