Until they will (hopefully!!) include the ability to see whether a song has scores on the leaderboards available in a more accessible manner, I figure it would be worth posting the collection we use to play the game, so that people know the songs of which artists are the most likely to actually have leaderboards.

So here is mine (a tip for those who know how to use cmd: "dir /D /S *. > musiclist.txt". or "dir /D *. > musiclist.txt". Then it's just a matter of cleaning that text file up a little):

(If there is only the name of the artist listed, I have most or all albums)

30 Seconds To Mars - This Is War (2009)
Air - Le Voyage Dans La Lune (2012)
Airiel - The Battle of Sealand
Alesana - A Place Where The Sun Is Silent (2011)
Almadrava
American Psycho - OST
Anamanaguchi - Dawn Metropolis (2009)
Angels and Airwaves - LOVE
Angelzoom - Angelzoom
Angelzoom - Nothing is Infinite
Apoptygma Berzerk - Rocket Science (2009)
Apoptygma Berzerk - You and Me Against the World (Limited Edition)
Ashram
Asia - Asia (Remastered 2010)
Avenged Sevenfold - Nightmare
Ayla - Nirwana
Band of Horses - Everything
Bastion - OST
Beautiful World - In Existence (1994)
Berserk - TV Anime Soundtrack
Bill and Ted's Excellent Adventure (OST)
Blackmore's Night - Shadow Of The Moon - No Limits
Blind Passenger - Flight
Bliss
Bliss - Quiet Letters
Braid OST
Breaking Benjamin - Dear Agony (2010)
Canna - Power Charts 1993
Capercaillie - Roses And Tears (2008)
Casshern OST
Cheap Dinosaurs
Chicane - Behind the Sun
Chicane - Maddening Crowds
Chill Sessions 4 CD1
Chill Sessions 4 CD2
Christopher Tin - Calling All Dawns
Clannad - Celtic Themes - The Very Best of (2008)
Confessions Soundtrack
Counting Crows
Counting Crows - Underwater Sunshine (Or What We Did On Our Summer Vacation) (2012)
Craig Armstrong - 1998-2008
Crusader - No Regret
Crusader - No Remorse
Dear Esther Soundtrack
Death Note - OST
Die Hit-Giganten Eurodance
Dissident Saint - The Rise
Disturbed
DJ Okawari
Dream Dance 08
Dream Dance 09
Dream Dance 13
Dream Dance 14
Drive Soundtrack OST (2011)
Duo 505 - Walzer Oder Nicht (2011)
E-Rotic - Sex Affairs
E-Rotic - The Power Of Sex (1996)
Ed Alleyne Johnson
Elsiane - Hybrid (2007)
Elsiane - Mechanics Of Emotion (2012)
Emancipator - Safe in the Steep Cliffs (2010)
Emancipator - Soon It Wil Be Cold Enough (2007)
Endless Blue - Fever Dreams
Endless Blue - Smoke Through It
Enigma
Enigma - Seven Lives Many Faces
Eskju Divine
Evanescence - Fallen
Evanescence - My Immortal (2003)
Everest - On Approach
Everybody's Fine - Dario Marianelli
Explosions In The Sky - All Of A Sudden I Miss Everyone (2007)
Explosions In The Sky - The Earth Is Not A Cold Dead Place (2003)
Eyes Set To Kill - Discography
Freddie Mercury - Barcelona
Freur - Doot Doot
Gabriel Knight
Giana Sisters Twisted Dreams - Original Soundtrack
Giga Hits of the 80ies (80's Giga Hits Collection)
Glasvegas - Euphoric Heartbreak (2011)
God Is An Astronaut
HIM - Razorblade Romance
Hooverphonic - No More Sweet Music
Hurts - Happiness (2010)
Immanu El
Intelligent Music Favorites
Jamestown - OST
John Hampson - 17m38s In The Dark
Jon Brion - Eternal Sunshine Of The Spotless Mind (2004)
Jon Brion - Synecdoche, New York
Jon Schmidt
Kate Havnevik - You (2011)
KeinOhrHasen OST
La Femme Nikita
La Mejor Musica Del Mundo - Pachelbel, Bach & Albinoni
Let's Go Sailing - The Chaos In Order (2006)
Lifeformed - Fastfall (Dustforce OST)
Limahl - Never Ending Story (2006)
Linkin Park
Lunik
M83 - Dreaming
M83 - Saturdays
Machinae Supremacy
Magic 80s Top 200
Metropolis Street Racer
Miaou
Miike Snow - Miike Snow (2009)
Mirror's Edge Score
Mirror's Edge Soundtrack
Moving Mountains - Waves (2011)
Nine Days
No Comply
No-Man - Flowermouth (1994)
Oldboy OST
Peter Heppner - My Heart of Stone
Peter Heppner - Solo (2008)
Posthumus
Pure Chillout (2001)
Raised By Swans
Rammstein - Liebe Ist Fr Alle Da (2009)
Reives Freebird - To the Moon - OST
Saltillo - Ganglion (2006)
Saltillo - Monocyte (2012)
Sawtooth - Eighties Bit
Seether
Shakatak - Into The Blue
Shakatak - Nightbird
Shatter - OST
Shenmue II Original Soundtrack
Shenmue Original Soundtrack
Sid And Nancy (OST)
Sigur Ros
Slovo - Todo Cambia (2007)
Stars
Susumu Hirasawa - Berserk OST (1997)
Telepopmusik - Angel Milk
Taking Back Sunday - Louder Now (2006)
Tempting The Muse - Part 1
The Album Leaf
The Chillout Session (2001)
The Corrs - Unplugged
The Cure - Greatest Hits Limited Edition (with Bonus Disc)
The Dream Academy
The Sounds - Living In America
Third Eye Blind
Three Days Grace - Life Starts Now
Ulrich Schnauss
Underoath - Sound Separation
VNV Nation
Wim Mertens
Wolf's Rain - ED Single
Wolfsheim
Yiruma
Yoko Kanno - Wolf's Rain OST 1
Yoko Kanno - Wolf's Rain OST 2
Yuki Kajiura - Fiction
Yuki Kajiura - Fiction II
Yuksek - Away From The Sea (2009)