1. Chart Highlights: Adele, Taylor Swift, Madonna Notch New No. 1s

    March 19, 2012 4:35 PM EDT Adele ascends to the Adult Contemporary summit, Swift crowns Country Songs and Madonna is the dancing queen again Chart Highlights offers a sneak peek at a select group of Billboard charts every Monday. Find out the top songs, Greatest Gainers and debuts on the surveys listed below. All our…