Timestamps located further down in this description.

An updated version of the legendary entrance music, now containing ones from the classic set and every expansion or adventure, including the recently released Whispers of the Old Gods.

This does include tokens such as V-07-TR-0N and Twin Emperor Vek'nilash, as well as the Ragnaros hero spawned from Majordomo Executus.

Credit to Hearthhead/Hearthpwn for the card images and Blizzard for the backgrounds. Hearthstone and its assets are property of Blizzard.

CLASSIC
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Cenarius, Prophet Velen: 0:00
King Mukla, Old Murk-Eye, The Beast, Hogger, King Krush: 0:06
Archmage Antonidas, Tirion Fordring: 0:12
Edwin VanCleef: 0:17
Baron Geddon, Al'Akir the Windlord, Ragnaros the Firelord: 0:20
Illidan Stormrage, Lord Jaraxxus: 0:26
Grommash Hellscream: 0:31
Lorewalker Cho: 0:37
Nat Pagle, Millhouse Manastorm, Tinkmaster Overspark, Captain Greenskin, Gelbin Mekkatorque: 0:43
Bloodmage Thalnos: 0:48
Leeroy Jenkins: 0:54
Harrison Jones: 0:58
Elite Tauren Chieftain: 1:06
Cairne Bloodhoof: 1:15
Sylvanas Windrunner: 1:21
The Black Knight: 1:27
Gruul: 1:33
Alexstrasza, Ysera: 1:37
Nozdormu: 1:42
Malygos: 1:47
Onyxia: 1:53
Deathwing: 1:59

NAXXRAMAS
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Maexxna: 2:06
Loatheb: 2:12
Baron Rivendare: 2:19
Feugen, Stalagg: 2:24
Thaddius: 2:30
Kel'Thuzad: 2:35

GOBLINS VS GNOMES
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Malorne: 2:43
Gahz'rilla: 2:50
Flame Leviathan: 2:55
Bolvar Fordragon: 3:01
Vol'jin: 3:07
Trade Prince Gallywix: 3:11
Neptulon: 3:16
Mal'Ganis: 3:24
Iron Juggernaut: 3:32
Hemet Nesingwary: 3:39
Mimiron's Head: 3:44
V-07-TR-0N: 3:50
Blingtron 3000: 4:04
Toshley: 4:10
Mogor the Ogre: 4:14
Gazlowe: 4:21
Troggzor the Earthinator: 4:27
Dr. Boom: 4:31
Foe Reaper 4000, Sneed's Old Shredder: 4:37
Mekgineer Thermaplugg: 4:42

BLACKROCK MOUNTAIN
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Emperor Thaurissan: 4:46
Majordomo Executus: 4:53
Ragnaros the Firelord (hero from Executus): 4:59
Rend Blackhand: 5:06
Chromaggus: 5:10
Nefarian: 5:16

THE GRAND TOURNAMENT
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Aviana: 5:23
Acidmaw, Dreadscale, Gormok the Impaler, Chillmaw, Icehowl: 5:29
Rhonin: 5:34
Eadric the Pure, Confessor Paletress: 5:40
Anub'arak: 5:46
The Mistcaller: 5:52
Wilfred Fizzlebang: 5:58
Varian Wrynn: 6:05
Fjola Lightbane, Eydis Darkbane: 6:11
Nexus-Champion Saraad: 6:17
Justicar Trueheart: 6:23
Bolf Ramshield: 6:28
The Skeleton Knight: 6:33
Skycap'n Kragg: 6:41

THE LEAGUE OF EXPLORERS
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Brann Bronzebeard, Elise Starseeker, Reno Jackson, Sir Finley Mrrgglton: 6:46
Arch-Thief Rafaam: 6:51

WHISPERS OF THE OLD GODS
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Fandral Staghelm: 6:59
Princess Huhuran: 7:05
Anomalus: 7:10
Ragnaros, Lightlord: 7:16
Herald Volazj: 7:24
Xaril, Poisoned Mind: 7:29
Hallazeal the Ascended: 7:36
Cho'gall: 7:43
Malkorok: 7:52
Shifter Zerus: 7:58
Nat, the Darkfisher: 8:03
Mukla, Tyrant of the Vale: 8:08
Hogger, Doom of Elwynn: 8:13
Twin Emperor Vek'lor: 8:17
Twin Emperor Vek'nilash: 8:22
The Boogeymonster: 8:27
Soggoth the Slitherer: 8:33
Deathwing, Dragonlord: 8:40
C'Thun: 8:47
N'Zoth, the Corruptor: 8:57
Y'Shaarj, Rage Unbound: 9:04
Yogg-Saron, Hope's End: 9:13