EPOCH Senior Healthcare of Chestnut Hill, 615 Heath St., will welcome musical performer J.D. Foster on Friday, Dec. 14 from 2:30 to 3:30 p.m. This event is free and open to the public. For more information or to R.S.V.P., please call 617-243-9990. To learn more about EPOCH, visit our blog at www.epochsl.com/blog.