Coincidentally I have the Beatles just albums, no demos or live performances. I burned some to disc the rest are mp3.

I have a lot and this is most of it.  I'm working on finding some for a couple others.  Most are mp3 however; some are CD, some are vinyl, and some are cassette (most of the Grateful Dead live)

The Beatles
Red Hot Chili Peppers (Live and B-Sides)
Bassnectar
Tiesto
Skrillex
Above and Beyond
Feed Me
Pretty Lights
Steve Aoki
The Doors
The Rolling Stones
Queen
Immortal Technique
Arcade Fire
Deadmau5
The Black Keys
Allman Brothers
Jimi Hendrix
BB King
Cream
Grateful Dead
STS9
Kaskade
Afrojack
Band of Horses
We Came As Romans
Asking Alexandria
RJD2
Avicii
White Stripes
Dead Weather
The Raconteurs
MGMT
Led Zeppelin
Aerosmith
Bon Iver
Jedi Mind Tricks

When I get music from a band I get all their music. I can't just have one disc. Any marked by a * are my favorites.

Angelspit
Apocalyptica
Breaking Benjamin
Combichrist
Creature Feature
Deathstars
Deftones
Die Form
Dr. Steel*
Emilie Autumn
Epica*
Evanesence
GRENDEL*
Horrorpops
Kidneythieves
Kittie
Korn
Mindless Self Indulgence*
Moi Dix Mois
Otep
Rammstein
Rasputina
Sirenia
Skinny Puppy
Stolen Babies*
Switchblade Symphony
System of a Down
The Birthday Massacre*
The Black Mages


Some of these I only liked a few songs by them but I downloaded the entire discography in hopes of finding other songs that I liked (mainly skinny puppy and Die Form). I'd have more but it's hard for me to find bands that I love since I have odd taste.

I have like all Rise Against, Story of the Year, and Less Than Jake's songs. But that's about it. I'm not as much a music enthusiast as some are.

I do listen to them religiously though, so it's all good.

Ok  update to my last post. I have to say that I have recently acquired AC/DC's discography. I need to double check to make sure I am not missing anything, but that's one down, 10 artists to go.

I generally don't bother getting the entire collection of songs from an artist. I find that for far too many of them once you get past the main tracks that people know the rest of the music is sort of bland or generic and not worth having.

Not true of all bands but for WAY too much I find it to be true.

I have a lot of songs from Billy Joel, Dave Matthews, and System of a down on my MP3 player.






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I have a lot of Keith Urban, but no.

I don't have the entire library.

I have four entire libraries.
Led Zeppelin
Cream
Animals As Leaders
& The Jimi Hendrix Experience

Legally, I own all by Deadmau5, Eminem, The Beatles, LMFAO, Skrillex, Nickelback, and Simple Plan.

Yes I do. I have all of Psychostick's CDs. Granted, there are only three, but I love them. I also have everything by Aqua Timez and Beat Crusaders. Plus I have all of L'arc~En~Ciel's albums, excluding the newest one, Butterfly.

I'm not much a music collector, so I don't really have any complete discographies. I just fetch mp3s/FLACs and whatnot when requested.

I have all of ACDC's albums on my iTunes account, and all of the CD's from Led Zeppelin, Guns N Roses, and a few others that I've forgotten. I mainly have these CD's because my parents love this type of music (And so do I ) and had gone and collected them.
I guess I can also mention how I have almost all of the Sonic Adventure CD's, with only having the OST and not the vocal soundtrack, Nya~.

I've got all of Metallica, Megadeth, Eminem, Ozzy, Jimi Hendrix, Black Sabbath, Apocalyptica (I think), and others that I'm sure I'm forgetting.

yes i have collected just about every ace hood album and every lil wayne album. I'm trying to wait to get the rest of my wiz khalifa albums. I have all of my songs on my mp3.

I don't; I really don't see a point in it. Then again, I've never liked all of the music by one person. Nickelback is as close as I get and I still don't listen to all their music, either.

Entire catalogs you say? My collection has quite a few:

AFI, Alkaline Trio, At the Drive-In, Blind Melon, Candiria, CKY, Clutch, Coal Chamber, Coheed and Cambria, Deftones, Down, Ewan Dobson, E-Town Concrete, Filter, Finch, Foo Fighters, Gizmachi, Glass Casket, Glassjaw, Gojira, Ill Niño, Jimi Hendrix, KMFDM, Life of Agony, Marilyn Manson, Michale Graves, Ministry, Nas, Necroptic Engorgement, Nine Inch Nails, Nirvana, Notorious BIG, Pantera, Paranoid Social Club, A Perfect Circle, Pink Floyd, Rage Against the Machine, Rustic Overtones, Stormtroopers of Death, Scars on Broadway, Skold, Slipknot,  Smashing Pumpkins, Snot, Soundgarden, Static-X, Sublime, System of a Down, Team Sleep, Thrice, Toadies, Tool, Van Halen, Wu-Tang Clan.

And then, there are a ton of artists that I don't have the entire discography of their work, but come awfully close to it. Some of them I am still working on (ie - Zeppelin), and some I gave up on (ie - Metallica).

Yep!

LP
Simple Plan
Drake
Eminem
LMFAO


And I could go on but... it would get longer and longer.