"Pompeii" originally by Bastille is featured in The Untitled Rachel Berry Project, the final episode of Season Five. It is sung by Artie (Kevin McHale), Blaine (Darren Criss), Brittany (Heather Morris), Kurt (Chris Colfer), Mercedes (Amber Riley), Rachel (Lea Michele), and Sam (Chord Overstreet).
No copyright infringement is intended. Please note I do not own any of these songs or clips. If you are interested in this song it is available to buy and download from Google Play & iTunes along with all 121 Episodes from all 6 seasons. :)