Match 12:
Oasis - “Champagne Supernova” - 15
Elvis Presley - “Hound Dog” - 17

Match 13:
3 Doors Down - “Citizen/Soldier” - 9
X-Japan - “Silent Jealousy” - 15

Match 14:
Hall & Oates - "Say It Isn't So" - 17
Darkthrone - "Canadian Metal" - 4

Match 15:
Volbeat - “Fallen” - 14
Enslaved - “The Watcher” - 4

Match 12:
Oasis - “Champagne Supernova” - 16
Elvis Presley - “Hound Dog” - 17

Match 13:
3 Doors Down - “Citizen/Soldier” - 10
X-Japan - “Silent Jealousy” - 15

Match 14:
Hall & Oates - "Say It Isn't So" - 18
Darkthrone - "Canadian Metal" - 4

Match 15:
Volbeat - “Fallen” - 15
Enslaved - “The Watcher” - 4

The vote's gotten messed up a bit. I've added KingsDimension and Gamer1270's votes to my own for Match 15:

Match 15:
Volbeat - “Fallen” - 20
Enslaved - “The Watcher” - 6

Match 16:
Savatage - “Mozart & Madness” - 2
Blondie - “Atomic” - 5

Match 17:
Van Morrison - “Brown Eyed Girl” - 5
Blink-182 - “Dumpweed” - 1

Match 18:
Pink Floyd - “Comfortably Numb” - 3
Guns N' Roses - “Sweet Child O’ Mine” - 2

Match 19:
Linkin Park - “Faint”
Bruce Springsteen - “Born to Run” - 1

Match 16:
Savatage - “Mozart & Madness” - 2
Blondie - “Atomic” - 5

Match 17:
Van Morrison - “Brown Eyed Girl” - 5
Blink-182 - “Dumpweed” - 1

Match 18:
Pink Floyd - “Comfortably Numb” - 3
Guns N' Roses - “Sweet Child O’ Mine” - 2

Match 19:
Linkin Park - “Faint”
Bruce Springsteen - “Born to Run” - 2

Match 16:
Savatage - “Mozart & Madness” - 2
Blondie - “Atomic” - 6

Match 17:
Van Morrison - “Brown Eyed Girl” - 6
Blink-182 - “Dumpweed” - 1

Match 18:
Pink Floyd - “Comfortably Numb” - 4
Guns N' Roses - “Sweet Child O’ Mine” - 2

Match 19:
Linkin Park - “Faint”
Bruce Springsteen - “Born to Run” - 3

Match 16:
Savatage - “Mozart & Madness” - 2
Blondie - “Atomic” - 7

Match 17:
Van Morrison - “Brown Eyed Girl” - 7
Blink-182 - “Dumpweed” - 1

Match 18:
Pink Floyd - “Comfortably Numb” - 5
Guns N' Roses - “Sweet Child O’ Mine” - 2

Match 19:
Linkin Park - “Faint”
Bruce Springsteen - “Born to Run” - 4

Match 16:
Savatage - “Mozart & Madness” - 2
Blondie - “Atomic” - 7

Match 17:
Van Morrison - “Brown Eyed Girl” - 7
Blink-182 - “Dumpweed” - 1

Match 18:
Pink Floyd - “Comfortably Numb” - 5
Guns N' Roses - “Sweet Child O’ Mine” - 2

Match 19:
Linkin Park - “Faint” - 1
Bruce Springsteen - “Born to Run” - 4

Match 16:
Savatage - “Mozart & Madness” - 2
Blondie - “Atomic” - 7

Match 17:
Van Morrison - “Brown Eyed Girl” - 7
Blink-182 - “Dumpweed” - 1

Match 18:
Pink Floyd - “Comfortably Numb” - 5
Guns N' Roses - “Sweet Child O’ Mine” - 2

Match 19:
Linkin Park - “Faint” - 1
Bruce Springsteen - “Born to Run” - 5

Match 16:
Savatage - “Mozart & Madness” - 2
Blondie - “Atomic” - 8

Match 17:
Van Morrison - “Brown Eyed Girl” - 7
Blink-182 - “Dumpweed” - 2

Match 18:
Pink Floyd - “Comfortably Numb” - 5
Guns N' Roses - “Sweet Child O’ Mine” - 3

Match 19:
Linkin Park - “Faint” - 2
Bruce Springsteen - “Born to Run” - 5

Match 16:
Savatage - “Mozart & Madness” - 3
Blondie - “Atomic” - 8

Match 17:
Van Morrison - “Brown Eyed Girl” - 7
Blink-182 - “Dumpweed” - 3

Match 18:
Pink Floyd - “Comfortably Numb” - 5
Guns N' Roses - “Sweet Child O’ Mine” - 4

Match 19:
Linkin Park - “Faint” - 3
Bruce Springsteen - “Born to Run” - 5