Jeduthun

"Lauder; praising, a Levite of the family of Merari, and one of" "the three masters of music appointed by David (1 Chr. 16:41, 42;" "25:1-6). He is called in 2 Chr. 35:15 "the king's seer." His" descendants are mentioned as singers and players on instruments "(Neh. 11:17). He was probably the same as Ethan (1 Chr. 15:17," "19). In the superscriptions to Ps. 39, 62, and 77, the words" upon Jeduthun probably denote a musical instrument; or they "may denote the style or tune invented or introduced by Jeduthun," or that the psalm was to be sung by his choir.

Definition of Jeduthun:
"his law; giving praise"