Their grandchildren had reminded Will of the song about demon pox he had taught them- when they were much too young, Tessa had always thought- and that they had all memorized. They sang it all together and out of tune, scandalizing Sophie.
Cassandra ClareMaybe you should call him,' Simon suggested, trying not to think too hard about how weird it was to be giving a demon hunter advice about possibly dating a warlock.
Cassandra Clare