There have been a handful of commercial songs played in LOST, as well as the haunting but brilliant soundtrack composed by none other than Michael Giacchino. Here is a list of the songs featured.

Song Title	Artist	Episode(s)
"Wash Away"	Joe Purdy	1.03 "Tablua Rasa"
"I Shall Not Walk Alone"	Blind Boys of Alabama	1.08 "Confidence Man"
"Delicate"	Damien Rice	1.17 "...In Translation"
"Make Your Own Kind Of Music"	"Mama" Cass Elliot	2.01 "Man of Science, Man of Faith", 3.08 "Flashes Before Your Eyes"
"Downtown"	Petula Clark	3.01 "A Tale of Two Cities"
"Walking After Midnight"	Patsy Cline	2.09 "What Kate Did"
"Moonlight Serenade"	Glenn Miller and Orchestra	2.13 "The Long Con", 3.01 "A Tale of Two Cities"
"Redemption Song"	Bob Marley (sung by Josh Holloway "Sawyer")	1.24 "Exodus" Part 2
"Up On the Roof"	The Drifters	2.04 "Everybody Hates Hugo"
"I Feel Like Going Home"	Muddy Waters	3.03 "Further Instructions"
"These Arms of Mine"	Otis Redding	2.19 "S.O.S."
"Shambala"	Three Dog Night	3.10 "Tricia Tanaka Is Dead", 3.20 "The Man Behind the Curtin"
"He's Evil"	The Kinks (sung by Dominic Monaghan)	2.10 "The 23rd Psalm"
"Are You Sure"	Willie Nelson	1.06 "House of the Rising Sun"
"Wonderwall"	Oasis (played by Dominic Monaghan "Charlie")	3.08 "Flashes Before Your Eyes"
"Leavin' On Your Mind"	Patsy Cline	1.03 "Tabula Rasa"
"Good Vibrations"	The Beach Boys	3.22 "Through the Looking Glass"
"Scentless Apprentice"	Nirvana	3.22 "Through the Looking Glass"
"La mer"	Charles Trenet(sung by Maggie Grace)	1.12 "Whatever the case may be"
"Brother"	Dominic Monaghan	2.12 "Fire + Water"
"Hard Way"	Kasey Chambers	2.20 "Two for the Road"
"Outside"	Staind	2.08 "Collision"
"Catch a falling star"	Perry Como	1.10 "Raised by Another"
"Heart and Soul"	Larry Clinton	1.20 "Do No Harm"
"Easy money"	Billy Joel	2.04 "Everybody Hates Hugo"
"My Conversation"	Slim Smith	2.04 "Everybody Hates Hugo"
"Redemption Song"	Bob Marley(Sung by Josh Holloway)	1.24 "Exodus: Part2"
"Compared to What"	Les McCann	2.17 "Lockdown"
"You all Everybody"	"Driveshaft"	Multiple Episodes
"The Celtic Song"	Glen Daly(Sung by Henry Ian Cusick)	3.17 "Catch-22"
"Rump Shaker"	Wreckx-N-Effect	3.14 "Exposi"
"Show Me The Way To Go Home"	Irving King(Sung by Josh Holloway)	3.09 "Stranger in a Strange land"
"Building A Mystery"	Sarah McLachlan	3.08 "Flashes Before Your Eyes"
"Slowly"	Ann-Margret	3.06 "I Do"
"I Wonder"	Brenda Lee	3.05 "The Cost Of Living"
"The Thunderer"	John Philip Sousa	3.01 "A Tale Of Two Cities"

Also these song are available for listening.