Michael Dutra said it’s “kismet” that he sings tunes associated with Frank Sinatra at events like the “Strictly Sinatra” fund-raiser at the Duxbury Senior Center this Sunday at 7 p.m. Dutra said he is 5-foot 8-inches, left-handed, and born on Dec. 12, just like Old Blue Eyes. “It’s a lot of fun,” said Dutra, whose credits include singing “On the Sunny Side of the Street” on a Twix candy bar commercial in South America. In Duxbury, he and “Strictly Sinatra” radio personality Ron Della Chiesa will appear at the fund-raiser organized by the Friends of the Duxbury Council on Aging. Marilyn Greenstein, chairperson of the event, said she has seen Dutra perform. “If you turn your head away, you would think it’s Frank Sinatra,” she said. Tickets, at $50 each, will be available at the door. Further information is available at 781-934-5774, ext. 100.