Glee is getting ready to celebrate their 100th episode on March 18, and Heather Morris – along with many other cast members – will return to celebrate.

The preview gave us a very brief glimpse:

http://youtu.be/NDj6kd0BwQk

Fortunately, we have screenshots and stills:

Most important, the music list:

“Valerie” featuring Naya Rivera (Santana) and Morris (Brittany) (season 5 version)

“Be Okay” featuring Michele (Rachel) and Rivera (Santana)

“Toxic” featuring Rivera (Santana), Morris (Brittany) and Agron (Quinn) (season 5 version)  – See the screenshot of the 3 of them in their old Cheerios outfits.

Will this be the end of Dani (Demi Lavoto) in New York? Will there be a fleeting Brittana reunion? Let’s hope it’s more than fleeting…