What are some cool songs i can put on my ipod?

Hey u guys!! Ok so lately I've been bored with the music I already have so I'm lookin 4 sum kwl songs 2 put on there, so cud u guys suggest sum? I have mostly country (the kwl country nt the oldies stupid crap) (mostly taylor swift cz she ma fav singer) I have pop\rock, a gud amount of rap, hip-hop, and r&b and I have a lil rock 2!!! The type of artists I have on here is taylor swift (as I said b4), B.o.B, lady gaga, OneRepublic, Justin Bieber, David Archuleta, Ke$ha, Paramore, Maroon 5, Pink, a lot of Rascal Flatts, Sean Kingston, Creed, New Boyz, Usher, 30H!3, Kris Allen, Ludacris, Cobra Starship, yeaa and plenty more but I think u get the idea lol!!!