Both songs exhibits strong funk, neo-soul elements. Both were featured in animated films, "Happy" on "Descipable Me 2" , while "Tightrope" on "Happy Feet 2". Set aside the success and chart statistics, and take into consideration the quality material of both songs. So, which is the better one?
It's weird, they are so similar, but one can be #1 for like 10 something weeks, and the other I'm just finding out about. I don't see how Happy can be so successful, but Tightrope can't, but such is life.