Pop: Pop music is the candy-colored, confectionery dessert of the music world. Why else do you think Katy Perry dresses the way she does? But just because it’s universally appealing doesn’t mean it’s any less difficult or simpler than the categories below. The best of pop strikes a chord and makes you dance because there’s a universally resonant message behind it.
Rock: Rock singing has certainly evolved since the days of Chuck Berry and Elvis Presley, and now umbrellas a number of different sub-genres and a wide array of voices and growls. One of the main things that sets rock apart from pop is a harder edge, often through drums, guitar, and harsher instrumentation (but hey, there’s always “rock/pop”).