During the 2360s, Commander William T. Riker kept a small holographic simulation of two women playing harp-like instruments in his quarters. When he needed to relax, he would turn on the hologram and listen to the music. (TNG: "Haven")
While serving as captain of the USS Rutledge in the mid-24th century, Benjamin Maxwell enjoyed a drinking song with lyrics that included "The minstrel boy to the war has gone / In the ranks of death you will find him / His father's sword he hath girded on / And his wild harp slung behind him." (TNG: "The Wounded")
Other cultures also had harps or harp-like musical instruments. The Edo also played a small instrument that resembled a transparent harp. (TNG: "Justice") A Bajoran variation included bells connected to the harp strings. (DS9: "Accession") Additionally, harp-like lutes were found in many cultures and included the Vulcan lute, the Bajoran lute, and the Risian lute.