This weekend, Lollapalooza is finally upon us in Chicago.

And for anyone keeping score, this marks the first summer where fans can connect directly with the vast majority of artists, in real-time, using Twitter. Here is a list of all the Lolla acts and their Twitter names (those not on Twitter left blank)…

A-Trak – @atrak
Alberta Cross – @albertacross
Amazing Baby – @AmazingBaby
Andrew Bird – @ANDREWBIRD
Animal Collective – @Arrrrgh
Arctic Monkeys – @ARCTICMONKEYS
Asher Roth – @AsherRoth
Atmosphere
Band of Horses – @Bandofhorses
Bassnectar
Bat For Lashes – @BAT_FOR_LASHES
Beastie Boys – @beastieboys
Ben Folds – @benfolds
Ben Harper and Relentless 7 – @BenHarper
Blind Pilot
Bon Iver
Boys Noise – @Boysnoize
Cage the Elephant – @CagetheElephant
Car Stereo (Wars) – @CSwars
Carney
Chairlift – @chairlift
Coheed and Cambria – @Coheed
Cold War Kids – @CWKontour
Constantines – @theconstantines
Crookers
Crystal Castles – @CRYSTALCASTLESS
Dan Auerbach – @thadistrict
Dan Deacon – @dandeacon
Dark Wave Disco
Davy Knowles and Back Door Slam
DeadMau5
Deerhunter
Delta Spirit – @deltaspirit
Depeche Mode – @depechemode
Eric Church – @Ericchurchmusic
Ezra Furman & The Harpoons – @ezrafurman
Federico Aubele – @FedericoAubele
Fleet Foxes – @fleetfoxes
Friendly Fires
Gang Gang Dance
Glasvegas – @glasvegas
Gomez – @gomeztheband
He Say, She Say
Heartless Bastards – @thehbastards
Hercules and Love Affair (DJ Set) @HerculesLA
Hey Champ @heychampmusic
Hockey
Hollywood Holt
Ida Maria
Jane’s Addiction – @janesaddiction
Joe Pug
Kaiser Chiefs – @kaiser_chiefs
Kaskade – @KASKADE
Kevin Devine – @KevinDevineTwit
KiD CuDi – @KiDcuDi
Kings of Leon – @Kingsofleonfans
LA Riots
Langhorne Slim – @langhorneslim
Living Things – @LivingThings
Los Campesinos! – @loscampesinos
Lou Reed – @LouReed
Lykke Li – @lykke_li
Manchester Orchestra
Miike Snow – @MiikeSnow
Moneypenny
MSTRKRFT – @MSTRKRFTMusic
Neko Case – @nekocasefans
No Age – @NoAgeLA
Of Montreal – @ofmontreal_fans
Other Lives
Passion Pit – @passionPit
Peter Bjorn and John – @PeterBjornJohn
Portugal. The Man – @portugaltheman
Ra Ra Riot -@Rarariot
Rise Against – @Riseagainst
Robert Earl Keen
Rye Rye @thaRealRyeRye
Sam Roberts Band – @samrobertsband
Santigold – @SANTIGOLD
Silversun Pickups – @SSPU
Simian Mobile Disco
Snoop Dogg – @snoopdogg
STS9 (Sound Tribe Sector 9) – @STS9
The Airborne Toxic Event – @Airborne_Toxic
The Bloody Beetroots (DJ Set)
The Builders and The Butchers
The Decemberists – @theDecemberists
The Gaslight Anthem
The Glitch Mob – @theGlitchMob
The Green Cards – @thegreencards
The Henry Clay People
The Killers – @_thekillers
The Knux – @theknux
The Low Anthem – @thelowanthem
The Raveonettes – @THERAVEONETTES
The Virgins
Thenewno2 – @thenewno2
Thievery Corporation – @ThieveryCorp
Tool
TV on the Radio – @tvontheradio
Vampire Weekend – @VAMPIRE_WEEKEND
White Lies – @whiteliesmusic
Yello Fever

(Anyone I missed? Let me know in the comments.)