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Hanks a lot!

Tom Hanks and Rita Wilson enjoyed a live performance of Room 105 – The Highs and Lows of Janis Joplin at the MACHA Theater in West Hollywood on Sunday.

Sporting a mustache, Hanks and Wilson entered the theater from the parking lot side entrance just before the show began, avoiding the lobby, an onlooker tells PEOPLE.

The couple then took their seats – stopping to chat with the older couple sitting behind them.

“Wilson clapped vigorously after each song but Hanks was much more reserved with his applause,” the source adds. “There was no hand holding or major interaction between the two during the show.”

But “both took part in the standing ovation” and as the couple left the theater, an elderly woman told Hanks “I love you.” “He gave her a hug and spoke with her briefly before leaving,” the source says.

– Patrick Gomez