It's that time of year again! Britney's on her way to "Glee..." at least music-wise.
In the video below, Heather Morris -- McKinley High's resident Brittany -- performs a dazzling rendition of Britney Spears' "Hold It Against Me."
Additionally, RyanSeacrest.com has tracks of the cast singing "Gimme More" and "Oops ... I Did It Again."
Check them out below!Make sure to catch the "Glee" cast's homage to Spears this Thurs., Sept. 20 at 9 p.m. ET on Fox.