Best songs to try with Audiosurf?

Ballads, try ballads.

Motorhead - Ace of Spades

Eff Grandad
Stomp Em In The Nuts

Try these (lossless audio)
(Click this to download)
Smaller file size version of the same thing (audio with some loss)

If you want something less hectic, try some post-rock - Explosions in the Sky, God is an Astronaut, Red Sparowes.

Portishead's "Machine Gun"

Nine Inch Nails - Into the Void

Flux Pavillion - Haunt you

Any random D&B or goa track

I don't know if you've heard of this one, it's pretty obscure

never tried it but Dragon attack by Queen has a certain flow wich I think would play out real good in the game:)

Frankly I had the best experience playing my favourite songs and singing along (silently) as I bobbed up and down.

The best I've seen is Body Breakdown - DragonForce

The End by the Doors

Try the stuff by the protomen.

most stuff by the pixies, "suffragette city" by bowie works well too. also, the birthday party.

Franz Ferdinand - Take Me Out \\Hellish downhill. Ninja skills required!

The Gap Band - You Dropped A Bomb On Me \\Very nice downhill too

Burns - Lies (Otto Knows remix) \\Very fun to play on this track :3

Comapny B - Fascinated \\I likw to listen to this more than play but you can try it anyway

Biz Markie - Just A Friend \\This one's easy but it's all about the song, right?

REM - Losing My Religion \\If you still haven't tried

Gorillaz - Dare \\For some reason this impressed me when playing first time

Beastie Boys - Fight For Your Right \\Unstable and disturbing :D

Outkast - B.O.B \\Well. This is challenging.

Rock - I Am Rock \\This ones a rulebreaker. It goes down and it's a rap.

Bassnectar - Empathy \\It's a fucking death spiral

Rudimental - Not Giving In \\You HAVE to listen Rudimental!

Mind my stupid comments and I hope you'll find something to your liking ^_^

Skyfire - Dimensions Unseen is quite challenging :)

VNV Nation, Doomsday by Nero, Daft Punk, just to name a few.

Anything by Pretty Lights. This is one of my favorites.

4:33 by Nick Cage

Dragonforce - Through The Fire And Flames

It's make you crazy. I play Audiosurf with my keyboard :P

Revolvr - Feel Good

justin beiber?haha

Any hardstyle :D or the FearFM top 100 Hardstyle CD1 (about an hour of music) if you can last that much xD