Michelangelo Rossi's two books of five-voice polyphonic madrigals are among the most expressive works of their kind ever composed. Showing the influence of Gesualdo, the madrigals were probably written in Rome betwen 1624 and 1629, when Rossi was in the service of Cardinal Maurizio of Savoy. They were apparently never published, and there is only one complete manuscript source, which once belonged to Queen Christina of Sweden and now forms the principal source for Brian Mann's critical edition.