The 19 Most Epic Glee Performances of All Time

When this song was performed, we were at episode five in the first season. And yes, we know all of these cast members are great singers — but we didn't realize their full potential until this song. We see Rachel and Finn shine in "Don't Stop Believin,'" but we get to hear Artie and Mercedes shine in the cover of the Queen classic. (Don't pretend like you don't get chills when Mercedes has her solo at the end.)