Praise the LORD with harp: sing unto him with the psaltery and an instrument of ten strings. Praise the Lord with harp - כנור kinnor; probably something like our harp: but Calmet thinks it the ancient testudo, or lyre with three strings.
The psalter - נבל nebel. Our translation seems to make a third instrument in this place, by rendering עשור asor, an instrument of ten strings; whereas they should both be joined together, for נבל עשור nebel-asor signifies the nebal, or nabla, with ten strings, or holes. Calmet supposes this to have resembled our harp. In one of Kennicott's MSS., this Psalm begins with the second verse.