Psalms 89:1

Ethan : a wise man, an Ezrahite, in Solomons time,son of Zerah son of Judah; the father of Azariah,son of Zimmah, of Gershom of Levi; ancestor of Asaph; the father of Adaiah,son of Kishi (Merari Levi); a worship leader in David's time
(31° 22´, 35° 4´); (31° 22´, 35° 4´)

Ezrahite : a descendant of Ezrah

Maskil : a literary or musical term

Psalms 1:1--2:12

Zion : one of the hills on which Jerusalem was built; the temple area; the city of Jerusalem; God's people,a town and citidel; an ancient part of Jerusalem
(31° 46´, 35° 14´)