Charles Ellicott Commentary Psalms 150:3

"Praise him with trumpet sound: Praise him with psaltery and harp." — Psalms 150:3 (ASV)

Trumpet.— Heb., shôphar. (Psalms 98:6. Septuagint, σάλπιγξ.) It was the crooked horn, sometimes also called keren. (Bïble Educator, 2:231.)

Psaltery and harp.— See Note, Psalms 33:2.