August was hay season for Sawyer Fredericks. “These past two days we were having a huge hay season,” Fredericks said on a recent call. “We had nine wagons of hay and I was on stacking duty.” By the end, he’d stacked all nine.   “[That’s] probably the most work I've done during a hay season, which I'm very proud of myself,” said the singer-songwriter, who has returned to his roots both physically and with his songwriting.  After living in Troy for a time, Fredericks recently moved back home to his family’s Montgomery County farm and has been pitching in there while…