harper(n = noun.person) harpist - someone who plays the harp;
is a kind of instrumentalist, musician, player
Derived form verb harp₂

1.  A player on the harp; a minstrel. [1913 Webster]
"The murmuring pines and the hemlocks . . .
Stand like harpers hoar, with beards that rest on their bosoms." [1913 Webster]

2.  A brass coin bearing the emblem of a harp, -- formerly current in Ireland. B. Jonson. [1913 Webster]

N  musician, artiste, performer, player, minstrel, bard, accompanist, accordionist, instrumentalist, organist, pianist, violinist, flautist, harper, fiddler, fifer, trumpeter, piper, drummer, catgut scraper, band, orchestral waits, vocalist, melodist, singer, warbler, songster, chaunter, chauntress, songstress, cantatrice, choir, quire, chorister, chorus, chorus singer, liedertafel, nightingale, philomel, thrush, siren, bulbul, mavis, Pierides, sacred nine, Orpheus, Apollo, the Muses Erato, Euterpe, Terpsichore, tuneful nine, tuneful quire, composer, performance, execution, touch, expression, solmization, playing, musical, adagio, andante.