Jimmy Fallon and the Roots knew exactly who to call when it came time to perform their hilarious new rendition of the “Ghostbusters” theme song.

The Tonight Show host and his band teamed up with singer Ray Parker Jr. and none other than original Ghostbusters Bill Murry and Ernie Hudson during Friday’s episode to perform the 1984 hit using only teeny- tiny classroom instruments. And, naturally, they did it all while dressed in their own personalized jumpsuits in a neon green ectoplasm-encrusted room. 

Ghostbusters: Frozen Empire is an adventure-comedy-fantasy film brings together both new and old Ghostbusters as they face an evil force unleashed by the discovery of an ancient artifact. They must protect their home and save the world from a second ice age! I love me some good ole fashioned ghost bustin don’t you? See the tiny instruments performance here: Watch Ray Parker Jr., Bill Murray, Ernie Hudson, and Jimmy Fallon perform the ‘Ghostbusters’ theme on classroom instruments (nme.com)