Celtic harp is a genre centered on the traditional small harp of the Celtic nations (Irish cláirseach, Scottish clàrsach, Welsh telyn), today most often the modern lever harp. It features instrumental arrangements of traditional airs, planxties, laments, and dance tunes (jigs, reels, hornpipes, slip jigs), as well as newly composed pieces in a Celtic idiom.
The sound is shimmering and bell-like, using arpeggiated accompaniments, drones, rolled chords, and rich damping techniques. Modal harmony (Dorian, Mixolydian, Aeolian) and pentatonic colors are common, and performers often change mode mid‑piece via lever flips. While rooted in folk tradition, the contemporary genre spans concert stages, folk festivals, and contemplative/new‑age settings, ranging from solo harp to small ensembles with fiddle, flute/whistle, bodhrán, and voice.
Wire‑strung Gaelic harps flourished in medieval Ireland and Scotland, serving courts and bardic traditions. Repertoires included laments, marches, and noble airs, and early technique emphasized resonance, counter‑melody, and damping on brass strings.
By the late 18th century the courtly harp tradition waned. Figures like Turlough O’Carolan bridged folk and Baroque styles, leaving planxties that became core repertoire. Harp making and pedagogy persisted sporadically in Ireland, Scotland, and Wales (including the triple harp), but public prominence diminished.
Folk revivals across the Celtic nations in the mid‑20th century inspired new instrument building (gut/nylon‑strung, lever harps) and pedagogy. From the 1970s, recording artists and educators standardized a modern technique for dance sets, slow airs, and O’Carolan repertoire, bringing the harp back to festivals, session culture, and concert halls.
From the 1980s onward, the Celtic harp became a global emblem of Celtic identity and a vehicle for new composition. Artists expanded into chamber, world, and new‑age contexts, collaborated with fiddles, flutes, uilleann pipes, and even electronics, and helped establish competitions, conservatory programs, and maker communities. Today, the genre bridges tradition and innovation, with repertory spanning archival tunes, historically informed wire‑strung practice, and newly composed modal works.