Let's begin with a couple of things you don't necessarily need or want to know but I'm going to tell you anyway:
Unlike prior years, I'm not writing any accompanying text for any of these wonderful recordings. They are certainly worthy of any verbiage me or anyone else should choose to drop. However (and here's the stuff you don't need to know), I find myself with
much less free time this year than I have in the past and since I didn't want to post this list when we were were already well into 2013, a simple list will have to suffice.
The good news is I've posted links for each entry where one can stream and/or purchase these releases, which is ultimately a more effective marketing tool than my overwrought prose.
Disclaimer: It's entirely probable that I've forgotten any number of fine examples of musical correctness issued in 2012. I will resist the urge to revise. Feel free to call out the idiocy of my omissions in the comments.
So then, alphabetically...
The Top Ten
Apache Dropout Bubblegum Graveyard (Trouble in Mind) [Spotify]

Bare Wires Idle Dreams (Southpaw) [Midheaven]

Grass Widow Internal Logic (HLR) [Spotify]

Ladyhawk No Can Do (Triple Crown) [Bandcamp]

Literature Arab Spring (Square of Opposition) [Bandcamp]

Protomartyr No Passion, All Technique (Urinal Cake) [Midheaven]

Rayon Beach This Looks Serious (HoZac) [Spotify]

Super Vacations Heater Pt II (Funny/Not Funny) [Soundcloud]

White Lung Sorry (Deranged) [Bandcamp]

The Young Dub Egg (Matador) [Spotify]
Honorable Mentions
Chris Brokaw
Gambler's Ecstasy (12XU)
[Spotify]
Call of the Wild
Leave Your Leather On (Kemado)
[Spotify]
Ex-Cult
Ex-Cult (Goner))
[Spotify]
G. Green
Crap Culture (Mt St Mtn)
[Bandcamp]
Golden Boys
Dirty Fingernails (12XU)
[Big Cartel]
Hank Wood and the Hammerheads
Go Home (Toxic State)
[Big Cartel]
The Karl Hendricks Trio
The Adult Section (Comedy Minus One)
[Spotify]
Metz
Metz (Sub Pop)
[Spotify]
Nazi Gold
A Message of Love (Super Secret)
[Bandcamp]
The People's Temple
More For The Masses (HoZac)
[Spotify]
Radar Eyes
Radar Eyes (HoZac)
[Spotify]
Ty Segall
Slaugtherhouse (In The Red)
[Spotify] and
Twins (Drag City)
[Spotify]
Tyvek
On Triple Beams (In The Red)
[Spotify]
Woollen Kits
Four Girls (Trouble in Mind)
[Spotify]
XYX
Teatro Negro (Monofonus Press)
[Spotify]
Singles, EPs, etc
Child Actors "Summer Lawns" b/w "McKinley" (download only)
[Bandcamp]
Coffin Pricks "Group Home Haircut" +2 7" (Stationary Heart)
[Soundcloud]
Gotobeds
Fucking in the Future 5-song cassette (self-released)
[Bandcamp]
Lame Drivers
Summer 2012 Tour Tape (split w/ The Woolen Men) (Eggy)
[Free Music Archive]
Mouthbreathers "Die Alone" b/w "Validation" 7" (Replay)
[Bandcamp]
Per Purpose "Warburton" b/w "Business" 7" (Bedroom Suck)
[Bandcamp]
Savages "Flying To Berlin" b/w "Husbands" (Pop Noire)
[Spotify]
Unholy Two "Cut The Music (I'm The Nightstalker)" b/w "Razor" 7" (12XU)
[Bandcamp]
Wax Idols "Schadenfreude" b/w "The Last Drop" 7" (Suicide Squeeze)
[Bandcamp]
What Next? "The Trip" b/w "Don't Believe" 7" (Whim)
[Bandcamp]