need bass guitar played over my beats similar to this http://www.youtube.com/watch?v=lS2dedI7sw4&feature=related http://www.youtube.com/watch?v=Bsw4O7evnu8&feature=related http://www.youtube.com/watch?v=fVR-7kk4Shs… (Budget: $30-250, Jobs: Audio Services, Music)