These are all songs that are deemed annoying by many people. If you don't agree with the classification, then by all means leave a comment justifying your opinion, but remember this is just a light-hearted quiz, not a damning critique of your music taste.
Sources vary, but are all taken from the main lyrics websites on the internet, e.g. MetroLyrics and AZ Lyrics.
Note: Gangnam Style accepts only the Korean in the English script.