FOX’s pre-holiday episode of Glee hit all the right notes, featuring several great performances that struck a chord with viewing audiences. Not only did we get two fabulous solo performances in the ...

Adele's music has appeared on 'Glee' before -- early last season, the choir performed a cappella versions of ‘Rolling in the Deep’ and ‘Turning Tables,' and later that year, they did a mash-up of ...