Put on your dancing shoes: The 55th annual Grammy Awards air live on CBS this Sunday, Feb. 10, at 8 p.m. ET. Leading the Grammy field this year are The Black Keys, Frank Ocean, and Taylor Swift, while Justin Bieber was shut out — a criminal omission, according to his fans. Now, in case any of these artist names look unfamiliar — or if you just want to relive the year in popular music — we've put together a playlist for all your Grammy-cramming needs. Here it is: 50 Grammy-nominated songs you should spend a little time with before Sunday's big show. Happy listening!