Should anyone not be tired of Farinelli’s repertoire after the Philharmonia Baroque set, here is Philippe Jaroussky, among the most recent of the countertenor superstars, singing Handel and Vivaldi arias with Jeannette Sorrell’s Cleveland-based ensemble Apollo’s Fire. The program (leavened by a couple of Vivaldi instrumental concertos) is a daunting one, but there’s no trove of 18th-century music richer, nor anyone better equipped to make it truly sing.