SONGS FROM THE HEART: In the three years he has delivered singing valentines as part of a barbershop quartet, Sounds of Concord chorus member Frank Rowe  has visited homes, offices, schools, hospitals, retirement communities, restaurants, and factories. At one stop last year, a surprised recipient happened to answer his door while on Skype with his girlfriend, who had arranged for the special delivery.

“The men tend to get a little more embarrassed, but they get into it very quickly,” said Rowe, who lives in North Andover. “It’s just a lot of fun, and very rewarding for us.”