NEW YORK — William Finn admits up front that he’s a latecomer to Red Sox fandom. Growing up in Natick, he would fall asleep at night to the sound of Celtics and Bruins games on the radio and find out from his parents in the morning who’d won. But baseball never moved him.
And then it did. The composer and lyricist, who picked up two Tony Awards for “Falsettos” in 1992 and had a more recent Broadway hit in “The 25th Annual Putnam County Spelling Bee,” does like a winner and can’t stand a sore loser. As the Sox’s fortunes rose in recent years, and Yankee fans sniped bitterly, Finn, 61, a New Yorker for decades, made his way at last to Red Sox Nation.