Psalms 4:1

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

Psalms 6:1

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

sheminith : a musical term: an 8 stringed lyre or 'down an octave' (NASBfn)

Sheminith : a musical term: an 8 stringed lyre or 'down an octave' (NASBfn)

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 55:1

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

Maskil : a literary or musical term