The Office Season 7 Episode 3 (The Office s07e03) with title “Andy’s Play” aired on Thursday, October 7th 2010 at 09:00 pm via NBC Network.
Here is summary for The Office Season 7 Episode 3 :

Andy invites the gang to his community-theater staging of “Sweeney Todd,” but his ultimate hope is to impress Erin. Michael, habitually starved for attention and now upstaged, tries to push his jealousy aside and take in the performance.