Boston Debut! Angela Hewitt is that rare pianist who thinks of everything. She is a meticulous planner of her performances with a strong feeling for the needs of her audiences. There is good reason to regard her as a Bach specialist: she is a brilliant Bach interpreter; but that is a small part of why Hewitt matters. She solves the labyrinth of Bach all the while regarding her piano as an extension of her voice. Her performances are both logical and humane. Angela Hewitt is a keyboard wizard with a gift for song.