Bill Murray and Jon Hamm sing on stage at SNL 50th anniversary after-party

Footage show Bill Murray and Jon Hamm take the to stage to sing at an after-party following SNL's "crazy" 50th anniversary celebrations.

A swarm of A-listers attended the Saturday Night Live 50th anniversary spectacular - including Meryl Streep, Lady Gaga and Sabrina Carpenter.

After the anniversary show finished, celebrities headed to The Plaza Hotel in New York City for an after-party.