Complex sentence: His history in the United States Library of Congress dates back to 1989, and his catalog of music includes over 50 pieces of music, and he is registered with Broadcast Music Incorporated as a songwriter and publisher.
Split into simpler sentences: His history in the United States Library of Congress dates back to 1989, and his catalog of music includes over 50 pieces of music. Saari is registered with Broadcast Music Incorporated as a songwriter and publisher.