Psalm 9:16
The LORD is known by the judgment which he executeth: the wicked is snared in the work of his own hands. Higgaion. Selah. Higgaion: that is, Meditation

Psalm 92:3
Upon an instrument of ten strings, and upon the psaltery; upon the harp with a solemn sound. the harp...: or, the solemn sound with the harp a solemn...: Heb. Higgaion