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2.01 - In my time of dying

• Stranglehold by Ted Nugent
  plays during the season one recap
• Bad moon rising by Creedence Clearwater Revival
  The possessed truck driver is on his way to the wrecked Impala

2.02 - Everybody loves a clown

• Time has come today by The Chambers Brothers
  plays during the recap
• Shambala by 3 Dog Night
  Dean works on fixing the Impala
• Do that to me one more time by Captain & Tenille
  The guys drive up to the Roadhouse

2.03 - Bloodlust

• Wheel in the sky by Journey
  plays during the recap
• Back in black by AC/DC
  The return of the Impala
• Time & time again by Long John Hunter
  The guys meet Ellen for the first time
• Funny car graveyard by Lee Rocker
  Sam calls Ellen about Gordon
• Golden rule by Lil Ed and the Blues Imperials
  Sam, Dean and Gordon are drinking at a bar
• Eternal destiny by MegaTrax Music Production
  plays during the promo

2.04 - Children shouldn't play with dead things
No music in this episode

2.05 - Simon said

• Women's wear by Daniel May
  plays during the teaser, when Doc shoots the store owner
• Can't fight this feeling by REO Speedwagon
  Jo offers to help Dean; later Dean sings this in the car
• Stonehenge by Spinal Tap
  Sam & Dean spy on Andy
• Fell on black days by Soundgarden
  Sam & Dean tell Ellen what they know about the demon
• Tired of crying by Lil Ed and the Blues Imperials
  at the Roadhouse, the guys are looking for Ash

2.06 - No exit

• Surrender by Cheap Trick
  The guys drive to Philadelphia
• Cold as ice by Foreigner
  The drive back to the Roadhouse
• Rock and roll ain't noise pollution by AC/DC
  Dean's ringtone

2.07 - The usual suspects
No music in this episode

2.08 - Crossroad blues

• Crossroad blues by Robert Johnson
  Robert makes his deal with the demon
• Downhearted blues by Son House
  plays at George Darrow's place
• Key to the highway by Big Bill Broonzy
  Sam & Dean discuss their dad's legacy
• Chaos surrounds you by Brian Tichy
  Dean changes the music to avoiding talking to Sam
• Hair of the dog by Nazareth
  plays during the montage scene of the upcoming episodes

2.09 - Croatoan
No music in this episode

2.10 - Hunted

• God's gonna cut you down by Johnny Cash
  plays during the pre-show promo
• White rabbit by Jefferson Airplane
  plays during the teaser, Scott's therapy session and attack
• Lonesome stranger by Carey Bell
  Sam arrives at the roadhouse
• Supermassive black hole by Muse
  Ash gives Sam the results of his search

2.11 - Playthings
No music in this episode (?)

2.12 - Nightshifter

• Renegade by Styx
  Dean & Sam get in their car after escaping the bank

2.13 - Touched aka Houses of the Holy

• Down on love by Jamie Dunlap
  Dean listens to music while enjoying the 'magic fingers'
• Knockin' on heaven's door by Bob Dylan
  Sam & Dean discuss Father Gregory and God's will

2.14 - Welcome to my nightmare aka Born under a bad sign

• Ashes to ashes by Tarbox Ramblers
  Sam finds Jo at a bar
• The crystal ship by The Doors
  Sam taunts Jo about how her father really died
• Rock and roll ain't noise pollution by AC/DC
  Jo finds Dean by tracking his ring tone
• Back on the road again by REO Speedwagon
  Sam & Dean discuss the possession while driving

2.15 - Tall tales

• Next to you by Junk Food
  Sam interrogates two students. Dean & Starla are drinking
  
• Walk away by James Gang
  Sam is doing research while Dean is eating on his (Sam's) bed
  
• Lady in Red by Chris De Burgh
  Curtis is slow dancing with an alien
  
• Can't get enough of your love, babe by Barry White
  Dean enters the auditorium where the trixter is waiting for him

2.16 - Road kill

• House of the rising sun by The Animals
  repeatedly plays throughout the episode. It was on when Molly hit the old man

2.17 - Heart

• Smoking gun by Kip Winger
  plays at the strip club
  
• Silent lucidity by Qeeensryche
  Sam realizes that he has to shoot Maddison in order to save her
  
• Look at you by Screaming Trees
  plays during the Maddison/Sam sex scene
  
• Down in the street by The Stooges
  Dean watches Kurt's apartment and is later attacked by Maddison

2.18 - Hollywood Babylon

• I've got the world on a string by Frank Sinatra
  plays when Sam and Dean visit 'Frank' at his place
  
• Green peppers by Herb Alpert
  plays at the very end of the episode
  

2.19 - Folsom prison blues

• Green onions by Booker T. & The MG's
  plays when Sam and Dean arrive at the Green River Detention Center
  
• Rooster by Alice In Chains
  plays at the very end of the episode

2.20 - What is and what should never be

• Saturday night special by Lynyrd Skynyrd
  plays when Sam calls Dean about the djinn; repeats as Dean and Sam arrive at the warehouse in Illinois
• What a wonderful world by Joey Ramone
  plays when Dean is mowing Mary's lawn

2.21 - All hell breaks loose, part 1

• Foreplay/Long time by Boston
  plays during the recap and when Dean sends Sam into the diner for food
• Wrapped around your finger by Martyn Laight (composer)
  plays in the diner when Dean walks in and realizes Sam has disappeared and everyone else is dead
• unknown song
  plays in the background at the roadhouse when Ash calls Dean

2.22 - All hell breaks loose, part 2

• Carry on wayward son by Kansas
  plays during 'The road so far' recap
• Don't look back by Boston
  plays at the end of the episode, when Dean puts the Colt in the trunk of the Metallicar
• unknown song (could be score music, though it seems a little unlikely)
  plays when Dean speeds off to the crossroads to bring Sam back