Best: I Will Wait - Mumford & Sons Forever - Youngblood Hawke From There To Back Again - The ビーチ Boys Go For あなた - The Explorers Club All Alright - fun.
Worst: Call Me Maybe - Carly Rae Jepsen Beauty and the Beat - Justin Bieber We Are Never Ever Getting Back Together - Taylor Swift Live While We're Young - One Direction Gangnam Style - Psy
If あなた don't agree (which I'm sure a lot of あなた won't), I don't care. It's my opinion.
I guess this means I should listen to modern music? Well I only listen to the bad songs, haven't found good ones from this year. I believe Gangam Style belongs on the bad 一覧 as does Want U Back (by Cher Lloyd).