I'd like to remind everyone that is clamouring for new Sonic remixes, DK music, Metroid, ect, that this is just the default song list. DEFAULT SONG LIST, meaning that there's at least 100 songs to unlock given a screenshot a while back showing the song list for the game at around 430 pieces of music. And I wouldn't be surprised to see 200 song unlocks in the game to be perfectly honest. I say we hold our judgement on the music selection for the game until the full list of songs is revealed because chances are, there's more than likely more Sonic, DK and Metroid music, along with more music for the other series represented in the game.
As for the quality of the music so far, I'm quite pleased with what I've heard so far. Most of the music that I wanted in the game is in the game, except for two REALLY important pieces of music from Fire Emblem: Awakening, but I still have hope that they are in the game somewhere. Other than those two, I'm perfectly content with what we have so far, but given that I know there's at least 100 songs to unlock within the game, possibly even more, I'm looking forward to seeing the full majesty of Smash Bros. Wii U's music.