Quotation zu Divrej Hajamim I 16:38

The praises of a man This book was composed with ten expressions of song: 1) with conducting, 2) with melody, 3) with musical accompaniment, 4) with song, 5) with praise, 6) with prayer, 7) with blessing, 8) with thanksgiving, 9) with praises, and 10) with “Praise God.” These correspond to the ten men who composed them: 1) Adam, 2) Malchizedek, 3) Abraham, 4) Moses, 5) David, 6) Solomon, 7) Asaph, and 8-10) the three sons of Korah. Concerning Jeduthun, there is a dispute. Some say that Jeduthun was a man, as is written in Chronicles. Others maintain that Jeduthun mentioned in this Book means nothing else but the ordinances (דתות) and laws of the decrees that were passed over him and over Israel.