I like many many kinds of music so here goes:
a.Classical-New Wave-New Age: Emma Shaplin,Vanessa May,Vangelis Papathanasiou,Yanni,Era,Enya,Enigma,Savvas Savva,Bill Welhan,John Ottman,Dead Can Dance,Beethoven,Mozart,Johann Strauss,Bach,Brahms,Chopin,Dvorzak,Hendel,Gershwin,Haydn,Lizt,Mentelson,Scarlatti,Howard Shore,Wagner,Richard Clayderman,Danny Elfman,Hans Zimmer,Lisa Gerrard,Gregorian,Secret Garden,Celtic,Vasos Argyridis,Yannis Markopoulos.
b.Greek New Wave-Entexni:Katsimixa,Alkinoos Ioannides,Apurimac,Dimitris Lagios,Eleutheria Arvanitaki,Eleni Tsaligopoulou,Giorgoa Ntalaras,Mikis Theodorakis,Mixalis Xatzigiannis,Giannis Kotsiras,Vasilis Kazoulis,Xaris Aleksiou,Alkistis Proropsalti,Antonis Remos,Giannis Ploutarxos,Antonis Vardis,Nikos Portokaloglou,Foivos Delivorias,Nikolas Asimos,Socratis Malamas.
c.Greek Rock:Armageddon,Diafana Krina,Endelexeia,Kitrina Podilata,Laurentis Maxairitsas,Onar,Orfeas Peridis,Prassin Aloga,Pix Lax,Trypes,Vasilis Papakonstantinou,Ypogeia Reumata,Exoristoi,Magic De Spell,Leukes Nyxtes,Manolis Famelos,Miltiadis Pasxalidis,Monitor,Mauri Magioneza,Rotting Christ,Oneiropagida,Panx Romana,Slobs,Ta Fota Pou Svinoun,Tsopana Rave,Xylina Spathia,Leuki Symfonia,Maskes,Termites,Dionysis Tsaknis.
d.Greek Hip Hop:Active Member,Imiscoumpria,Agnostoi Gnostoi,Fortified Concept,Lektikos,Method Man,Public Enemy,Terror X Crew,Zontanoi Nekroi,Goin'Through.
e.English R&B-Rap-Hip Hop:Eminem,Shaggy,2Pac,50 Cent,Aaliyah,Ashanti,Beyonce,Busta Rhymes,Coolio,DMX,Dr.Dre,Snoop Dog,Nash,Eve,Graig David,Icecube,Ja Rule,Jay-Z,Killarmy,Krumb Snatcha,Ludacris,Luniz,Mary J Blige,Masta Ace,Mis Teeq,Missy Eliot,Puff Daddy,Nelly,Justin Timberlake,Kelly,Notorious BIG,Bone Thugz,Outkast,Usher,Sean Paul,Sarah Connor,Sonic,Warren G,Xzibit,Black Eyed Peas,Blue Cantrell,Christina Aguilera,Cypress Hill,Jamelia,Kevin Lyttle,Nate Dog,Placebo,So Solid Crew,Shakira.
f.Engish Rock-Metal:Three Doors Down,Alanis Morisette,Avril Lavigne,Bryan Adams,Coldplay,Dashboard Confesionals,Something Corporate,Hoobastank,Green Day,Deep Purple,Eagles,Evanescence,Incubus,Kansas,Lifehouse,Maroon 5,Oasis,The Calling,Aerosmith,Anathema,Black Sabbath,Blackmore's Night,Blind Guardian,Blink 182,Bon Jovi,Borknagar,Bruce Dickinson,Candlemass,Children Of Bodom,Choke Hold,Chris De Burgh,Chumbawambe,Cream,Creed,Death,Def Lappard,Dio,Disturbed,Dream Theatre,Eric Klapton,Europe,Gamma Ray,Garbage,Godsmack,Grave Digger,Guns N Roses,HIM,Hammerfall,Helloween,Iced Earth,In Flames,Metallica,Iron Maiden,Judas Priest,Katatonia,Kiss,Korn,Led Zeppelin,Pink Floyd,Limp Bizkit,Linkin Park,Red Hot Chilly Peppers,Manilla Road,Manowar,Megadeath,Mercyful Fate,Moonspell,Morgana Le Fay,My Dying Bride,Motorhead,Nickelback,Nightwish,Nirvana,Obituary,Ozzy Osburne,Pantera,Powerman 5000,Queens,Queensryche,REM,Radiohead,Rage,Rage Against The Machine,Rainbow,Rolling Stones,Beatles,Sacret Steel,Savatage,Scorpions,Sepultura,Six Feet Under,Slayer,Slipknot,Sonata Artica,Status Quo,Steppenwolf,Saybia,Stereophonics,Stratovarius,Styx,Sum 41,System Of A Down,Cranberries,Dandy Warhols,Dolphins,Doors,Jim Morrison,The Offsprinh,The Rosenbergs,Trail Of Tears,Twarres,Twisted Sister,U2,Van Morrison,VNV Nation,Warrant,Whitesnake,Within Temptation,Yngwie Malmsteen,Wizzard,Edguy,Goldfinger,Overkill,Steel Dragon,Virgin Steele.
g.Slow:Celine Dion,Abba,Elton John,Hulio Iglesias,Alicia Keys,BBMak,Blue,Bonnie Tyler,David GRay,Dido,Frank Sinatra,Enrique Iglesias,George Michael,John Lennon,Kate Winslet,Level Best,Backstreet Boys,Lionel Ricky,Luther Vandross,Mariah Carrey,Phil Colins,Ricky Martin,Robie Williams,Ronan Keating,Roxette,Sarah Mc Lachlan,Sarah Brightman,Sting,Westlife,Whitney Hiouston,Will Young,Andreas Bocelli,Delta Goodrem,Josh Groban,Louis Armstrong,Norah Johes,Duran Duran.
h.Techno-Trance:Alice Deejay,ATB,Ayla,Barthez,Benny Benassi,DJ Magic Mike,Chemical Brothers,Moby,Prodigy,Fatboy Slim,Chicane,Faithless,Crystal Method,Daft Punk,Dance Dance Revolution,Dario G,Darude,Robert Miles,David Guetta,D-Devils,O-Zone,Delerium,Depeche Mode,Erasure,DJ Aligator,DJ Irene,DJ KFX,DJ Kosmonova,MC Neat,Ian Van Dahl,DJ Melody,DJ Mystic,DJ Pied Piper,DJ Quicksilver,DJ Sammy,DJ Shadow,DJ Sinister,DJ Tiesto,Eiffel 65,Funk D'Void,Gigi D'Agostino,Harold Faltermeyer,Jan Wayne,Jesika,John Digweed,Deep Dish,Sash,Sasha,Mauro Picoto,MC Hammer,MC Mario,Me & My,Lunatic Asylum,The Verve,Modjo,Noemi,Paul Van Dyke,Paul Oakenfold,Rob Dougan,Roger Sanchez,Scooter,Yakooza,Armin Van Buuren,Ferry Corsten,Carl Cox,Infected Mushroom,Matt Hardwick,Nick Warren.
These are the main genres and artists of each genre,there are many more,but i just can't remember any others.As for individual songs i don't think i can figure them out,there are so many from so many different music categories that moves my feelings.
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That is only a sample. 
