WHAT A LONG STRANGE TRIP IT'S BEEN.

Whether your personal soundtrack started in a poodle skirt or a tiedye, some phat-laced Pumas or on an iPod, Billboard is pleased to turn you on to the tools for some tuneful time travel: our charts. Enjoy our selection of decade-by-decade playlists, browse through a year-by-year chart history, or just check out what was number one on your birthday. Whenever it was—and whatever other chart you pick—you'll discover that, thanks to music, it was a very good year.