Bill Murray sang 'Take Me Out to the Ball Game' and inspired the Cubs to a comeback win

The Cubs are in the posteason once again, so you know what that means: Time for Bill Murray sightings at Wrigley Field.
And with the Cubs hosting their first home game of this postseason, Monday's 2-1 win over the Nats in Game 3 of the NLDS presented by T-Mobile, Bill Murray was spotted roaming the stands once again. And cheering. He was also spotted emphatically cheering, too:

Murray, arguably the most visible famous Cubs fan outside of Eddie Vedder and John Cusack (and David Ross, now, probably), made his way up to the booth alongside his brother, Joel, to lead the Wrigley masses in a rendition of "Take Me Out to the Ballgame" during the seventh-inning stretch. He did this last October, too, as you may recall. It's becoming something of a tradition.
Enjoy his full performance in the clip atop this post, and be prepared for more Murray, depending on how far the Cubs advance. 
Be sure to catch NLDS Game 4: Tuesday, 5:30 p.m. ET/4:30 CT on TBS (moves to 8 p.m. ET/7 CT if Dodgers win NLDS vs. D-backs tonight)