Berean Study Bible
You improvise songs on the harp like David and invent your own musical instruments.

King James Bible
That chant to the sound of the viol, and invent to themselves instruments of musick, like David;

American Standard Version
that sing idle songs to the sound of the viol; that invent for themselves instruments of music, like David;

Darby Bible Translation
that chant to the sound of the lute, [and] invent them instruments of music, like David;

Douay-Rheims Bible
You that sing to the sound of the psaltery: they have thought themselves to have instruments of music like David;

English Revised Version
that sing idle songs to the sound of the viol; that devise for themselves instruments of music, like David;

Young's Literal Translation
Who are taking part according to the psaltery, Like David they invented for themselves instruments of music;