The first trailer for the Broken Social Scene-scored, Sonic Youth-referencing film Daydream Nation dropped today as the upcoming world premiere of director Mike Goldbach’s feature directorial debut at the Toronto International Film Festival was announced. Boasting a title taken from a classic Sonic Youth record, a character named Thurston, and new compositions from BSS, I had a feeling this flick might be a musical treat (the next Scott Pilgrim, if you will). Well, the fine song selections for this trailer certainly offer more hope to that end.

Featured in the trailer for the Kat Dennings-starring drama are Beach House’s Teen Dream single “Walk in the Park” and a truly amazing cover of Buffalo Springfield’s Neil Young-penned song “Expecting to Fly” by Metric/BSS’ Emily Haines. Watch the trailer below alongside full videos of both songs that were all-too-briefly teased in the clip:

Last week, I posted a Bryan Lee O’Malley and Edgar Wright-approved mixtape of full versions of the songs featured in recent Scott Pilgrim Vs. the World trailers, and now — thanks to Pitchfork — we have a full official tracklist for the film’s soundtrack. Aside from Blood Red Shoes’ “It’s Getting Boring by the Sea,” none of the tunes from the trailers made the OST, though they could potentially end up in the film itself.

Take a look at the tracklist after the jump.

**Update: 2 more trailers have since dropped. We have new info + a trailer song mixtape here.

Just realized that we’ve been freaking out over the score to director Edgar Wright’s new Michael Cera-starring film, Scott Pilgrim Vs. The World, since at least last July, followed by an admittedly pretentious “Best Soundtrack of 2010” declaration before the holidays.

But seriously, how could Beck, Broken Social Scene, Metric, and [super]producer Nigel Godrich fail at making this flick anything less than epically scored? To wit: Beck’s songs will battle Japanese producer/musician Cornelius’ compositions — vicariously through Michael Cera’s lead character, of course — in a synthesizer versus bass guitar fight scene.

The film’s exciting teaser trailer dropped today, as you may have heard, but that’s not all… Edgar Wright has confirmed to the Playlist that the two music excerpts featured in the trailer are, in fact, both from Beck songs originally written for the film. Aw shucks, now we’ll have to watch it again:

Beck and Godrich are a busy team these days. We already knew they’ve been busy recording covers of complete albums and that Godrich has been in the studio recording Radiohead’s 8th LP, but now they’re also delving into movie soundtracks: The Playlist reports that Godrich has revealed some juicy details from the highly-anticipated Scott Pilgrim Vs. The World soundtrack, which Godrich is producing.

“There are four or five bands in the story,” Godrich told NME in a scan obtained by The Playlist. “We had to approach real bands to be the bands that appear in the graphic novel…Metric, Broken Social Scene and Beck are in there and they’ve all recorded original songs for the soundtrack.”

Three of the story’s bands that Beck, Metric, and BSS will use as their muse are called Clash at Demonhead, Crash In The Boys, and Sex Bob-Omb. For more details and some interesting speculation, click here.