Psalms 50:1

Asaph : father of Joah, Hezekiah's recorder,son of Berechiah the Levite; music minister under David,father of Zichri; a Levite ancestor of some returnees,an official over the (Persian) king's forest in Judah

Psalms 7:1-17

Benjaminite : the tribe of Benjamin of Israel

Cush : a country south of Egypt
(21° 57´, 31° 20´); (21° 57´, 31° 20´); (32° 49´, 21° 51´); (32° 49´, 21° 51´); (32° 49´, 21° 51´)

David : a son of Jesse of Judah; king of Israel,son of Jesse of Judah; king of Israel

Selah : a musical notation for crescendo or emphasis by action (IBD)
(30° 19´, 35° 27´)

Shiggaion : a literary or musical term