It was utterly disgusting, immoral, stupid and the voices did not even work up. At least "Friday" had some nice and addictive rhythm through the music, "Hot Problems" is a complete disaster of a "song".
In rock, anything by Nickleback or Creed...in rap/hip hop, anything by P.Diddy Puff Pop,or whatever he is called now....just mumbling over top of classic rock songs....famous Zakk Wylde quote..."That's not Puff Daddy,that's f--cking Led Zeppelin!"
Personally, I thought "Somebody I used to Know" was great! The guy was actually a good singer, unlike many of the other people out there that don't have talent. Anyway, probably the worst song I've heard is an attempted dubstep song. It was not dubstep AT ALL! It was horrible.