Andelin, the three volumes in the “With a Friend” series published by Herald Music are printed with lever harp plus string quartet parts. No lever changes need to be made throughout each piece. You can turn them into satisfactory violin and harp duets simply by playing those parts only. If the violinist is capable with double-stopping , he/she could play both Treble 1 and Treble 2 parts at once, for richer harmony. The whole series contains 53 arrangements in Folk, Christmas, and Familiar Hymn categories, and are sold in the U.S. and several foreign countries, by specialist harp music dealers.