Psalms 4:1

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

Psalms 54:1

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

Maskil : a literary or musical term

Saul : the sixth king of Edom,son of Simeon and a Canaanite woman,son of Uzziah of Kohath son of Levi

Ziphites : residents of the town of Ziph

Psalms 61:1

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

Psalms 67:1

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