Mark Miller, Assoc. Prof. of Church Music at Drew University and Lecturer in the Practice of Sacred Music at Yale, will lead a choral workshop at Grace U. M. Church on Saturday, April 30 from 3-5 p.m. An openly gay man, gifted composer, pianist and organist, he is active in causes of LGBT. Supper for participants. Sacred Songs and Social Justice Concert following at 7 p.m.