Gesualdo's Fourth Book of Madrigals contains some of the most inspired and anguished vocal works in the entire madrigal repertoire, written while the composer was tormented by remorse after the murder of his wife and her lover. This collection is filled with technical innovation and extremes of expressiveness in it's setting of highly dramatic texts. Unexpected dissonance, harmonic twists and elusive asymmetries all serve to dismantle the compositional rules of the period. Previous volumes in this series have been widely acclaimed. The Guardian described Book 2 (8.570549) as having "great beauty and lyrical force". The unconventional yet impassioned interpretations by Deliti Music and Marco Longhini are seen as an important element in the regeneration of Italian Renaissance and Baroque music. The ensemble is under exclusive contract to Naxos for the fourteen-CD collection of the Complete Madrigals by Monteverdi and now for the six-CD collection of Complete Madrigals by Gesualdo.