Our staff's favorite songs from a year that confirmed that hip-hop and R&B were now at top 40's center, but also had plenty of great rock, country and dance-pop to go around. This week, Billboard is ...

The time has come. It’s 8 p.m. on a syrupy Saturday night, the clouds are clinging to the last thread of sunlight and your friend just texted “Lighting up a joint. U down?” You’re down. You’re so down ...