See Britney's "Me Against The Music" Number on Glee!

Britney Spears is treating fans to a sneak peek of her "Me Against The Music" number featured on next Tuesday's episode of Glee.

She posted a mini-clip on her website Friday (watch above).

In addition to "Me Against the Music," the episode will feature "Toxic," "Stronger" and "I'm A Slave 4 U."