10 pts! Can someone come up with atleast 10 good new songs to download on my new MP3 player?

I just got a MP3 player (I know I live in the stone age) and I want to put some really cool songs on there. I got a $25 Napster card. I mostly like Hip-Hop,rap, some R&B, and alternative. An example of a new song that I like is Little Jackie's "The World Revolves Around Me". I want music that I can exercise to! I like Flo Rida's "Low". And who sings that one song about kissing a girl? If you could come up with a short list of good songs, I'd be really happy! THANKS!