Well, as we know LBP series has some rather epic songs. (Most of the time.)

Ok here are my choices:

LBPPSP: Bouchez https://www.youtube.com/watch?v=VwaNM6SSvsY

LBP1: Leaders of Men: https://www.youtube.com/watch?v=D_Omi7By7k0

LBP2: I Have Changed: https://www.youtube.com/watch?v=QDI3Tqbue1Y

LBPKarting: Ten Cities Beyond: https://www.youtube.com/watch?v=BXcO1jQ_PR4

LBP3: Pink Shoelaces: https://www.youtube.com/watch?v=x-bF6omT4Zc

LBPVita: The Land of Marianne: https://www.youtube.com/watch?v=eja8eaq3Z0U

What are yours?

"Ghosts" by Ladytron

nough said

Ay heah. Trippy.

LBP1 - Cries in the Wind
LBP2 - Sleepyhead or Ghosts idk which one
LBPK - Dubstep song - Apollo etc.. IDK what it is called
LBP3 - Energy (yes that one in a ending screen)

all of lbp1, 2, vita, psp, and karting, none in 3

LBP PSP: Either Space Journey (i think that was it's name? The last time i played LBP PSP was in 2012 somewhere...) or Voodoo Juju. I've always heard people say how the latter was an absolutely useless song, but i really like it a lot.
LBP2: Silver Surfer and whatever came after that bit of the title.
LBPV: Fly Vision, probably. Back in early 2014 i decided i was going to record the entire LBPV soundtrack. About 7 songs in, i had recorded Fly Vision too. It's such a catchy song that i just stopped recording the rest and did nothing but listen to it on repeat...
LBP3: Hmm. I may have to check the songs in it once again. Has anyone uploaded the OST to YouTube yet? Would make it easier.

LBP1: "Song 2"
LBP2: a tie between "Elevate This" and "Vision One"
LBP3: "Out of the frying pan"
LBPV: "S.H.I.E.L.D Interceptor Theme" for the Marvel Arcade Pack

LBP1: My Patch
LBP2: Rock Your Body ROCK
LBP3: How You Like Me Now

i just know from lbpv and lbp3

lbpv: Probably The Big Ride!
lbp3: Steam Punk'd

LBP1: The Wilderness
LBP2: FOABT
LBP3: Steam Punk'd

Uh...

LBP1: The song from the History Pack (If anyone can tell me what it is called, that would be helpful!)
LBP2: Sleepy Head
LBP3: Uhh... I am not totally sure... My PS3 has been corrupted for a while, so... I don't really remember...
LBPV: I've never played it.

So... not that many songs... Poop.
Oh well.

My favorite is still the song which practically started the whole adventure: Get it together (LBP1) - That's my favorite of all songs in the game series. 

But I also like these songs:
Race Against the Sunset (LBP3)
Adventure Awaits (LBP3)
Disco Shmisco (LBP2)
Sleepy Head (LBP2)

LBPV Ghost von frost / Off the hook / Eyen
LBP1 Get it together / Cornman
LBP2 Disco Shmisco / ghosts / sleepy head / what are you waiting for

Those are some songs I could listen to all day long. I think all lbp songs are amazing

yay! someone else likes Ghosts too

Lbp1 = My patch
Lbp2 = ghosts
Lbpk = happy birthday party
Lbp3 = None
Lbp psp = bouchez
Lbp vita = don't have

There you go. I do t have one for lbp3 as I haven't been playing so yeah.