The twenty songs I played, for those who missed it amongst the flying mini Mars bars, were:
ARIA The Natural Ending Theme: Natsu Machi (Round Table featuring Nino)
Eden of the East Opening Theme: Falling Down (Oasis)
Code Geass R2 2nd Opening Theme: World End (FLOW)
Myself; Yourself Opening Theme: Tears Infection (KAORI)
EF - A Tale of Memories Opening Theme: Eurphoric Field (ELISA)
K-ON Ending Theme: Don't Say Lazy (K-ON Seiyuu)
Kurenai Ending Theme: Crossing Days (Shintani Ryouko)
Mushishi Opening Theme: The Sore Feet Song (Ally Kerr)
Zettai Shonen Opening Theme: Hikari no Silhouette (CooRie)
Hidamari Sketch Ending Theme: Mebae Drive (marble)
Higurashi no Naku Koro ni Rei Opening Theme: Super Scription of Data (Shimamiya Eiko)
True Tears Opening Theme: Reflectia (eufonius)
Welcome to the NHK Opening Theme: Puzzle (Round Table featuring Nino)
Mai Otome Ending Theme: Otome wa Do My Best deshou (Koshimizu Ami & Kikuchi Mika)
Potemayo Ending Theme: Utatane (Chata)
Zoku Sayonara Zetsubou Sensei Opening Theme: Kuusou Rumba (Ootsuki Kenji and the Zetsubou Shoujo Tachi)
Penguin Musume Heart Opening Theme: Renai Jiyuu Shoujo (PNGN6)
Ghost Hound Opening Theme: Poltergeist (Kojima Mayumi)
Sky Girls Opening Theme: Virgin's High (MELL)
Canvas 2 Ending Theme: NA NA IRO (Sweets Tankentai)
If memory serves me, nobody got Myself; Yourself, Kurenai, Zettai Shonen, Hidamari Sketch, True Tears, Mai Otome, Penguin Musume Heart and Canvas 2. Must try harder to increase those power levels.
Cheers.