Original: His most famous compositions are his six published books of madrigals ( between 1594 and 1611 ) , as well as his Tenebrae Responsoria , which are very much like madrigals , except that they use texts from the Passion , a form ( Tenebrae ) used by many other composers .
Simplified: His most famous compositions are his six published books of madrigals ( between 1594 and 1611 ) , as well as his Tenebrae Responsories , which are very much like madrigals , except that they use texts from the Passion story about Christ 's death on the cross .