Johann Kaspar Mertz — The Romantic Poet of the Guitar
This guide is part of our overview of the essential classical guitar repertoire. Johann Kaspar Mertz (1806–1856) was the most important guitar composer of the mid-nineteenth century and one of the most underrated figures in the entire Romantic music canon — a Slovak-born, Vienna-based musician who brought genuine symphonic ambition and pianistic richness to an instrument the musical mainstream had largely written off.
The Romantic Guitar at Its Finest
Born in Bratislava (then Pressburg) in 1806, Mertz moved to Vienna and established himself there as a guitarist and teacher. He is a figure of the middle decades of the nineteenth century — after the early Romantic generation of Sor, Giuliani, and Legnani, but before the Spanish guitar revolution of Francisco Tárrega. This period is sometimes described as the guitar's "dark age," when the instrument's popularity declined relative to the piano and violin, and when serious composers largely ignored it. Mertz is the great exception: working in this period of relative neglect, he produced music that rivals the best of what was being written for the piano in sophistication and expressive depth.
The compositional breakthrough that produced his finest work came through an unusual and painful path: in 1846, Mertz nearly died from strychnine poisoning, possibly from a medical treatment overdose. During his recovery, confined at home, he listened intensively to his wife Josephine Plantin — herself a gifted pianist — play the piano repertoire: Chopin, Schumann, Schubert. He absorbed their harmonic world with fresh ears, and the result was a transformation of his compositional style. The guitar music he wrote after 1846 moves in a different world from his earlier work: richer, more harmonically adventurous, more structurally ambitious.
Bardenklänge Op. 13: The Masterwork
The Bardenklänge (Bardic Sounds), Op. 13, published from 1847 in volumes, is Mertz's central achievement: a collection of twenty-four pieces spanning a remarkable range of characters, moods, and technical approaches. The title — Bardic Sounds — invokes a Romantic vision of Celtic and Nordic antiquity, consistent with the era's enthusiasm for medieval and folk traditions. But the music is not merely evocative or picturesque; it has genuine structural depth and emotional range.
The Bardenklänge opens doors that had not previously been opened in solo guitar music. The harmonic language is richer than anything Sor or Giuliani had achieved — closer to Schumann's piano miniatures than to the Classical-period guitar's relatively simple harmonic vocabulary. The textures are fuller, making demands of the instrument's technical range that only the finest players could meet. And the emotional range — from the intimate and nostalgic to the brilliantly energetic — demonstrates that Mertz understood the guitar's full expressive spectrum.
The Tarantella
The Tarantella (from Op. 13, No. 6) is Mertz's most frequently played piece — a whirlwind of energy in A minor that has become one of the best-loved concert encores in the guitar repertoire. Its relentless triplet drive, its dramatic minor-key urgency, and its moments of lyrical relief within the forward momentum make it an immediately effective concert piece: it communicates directly with audiences who know nothing of Mertz's historical position or the significance of his achievement. The technique it requires — sustained speed, evenness of touch, control of dynamics within the triplet texture — is considerable, but the musical reward is immediate.
The Elegie
Where the Tarantella is extrovert and driven, the Elegie shows the other face of Mertz's musical personality: quiet, deeply introspective, and touched with genuine sorrow. It is a piece that rewards the same contemplative approach that the finest Chopin nocturnes require — unhurried phrasing, tonal subtlety, and a willingness to let the music breathe rather than driving it forward. In the hands of a player who understands its emotional depth, the Elegie is one of the most moving pieces in the Romantic guitar repertoire.
The Hungarian Connection
Born in Bratislava and working in Vienna, Mertz was positioned at the intersection of German, Austrian, and Hungarian musical culture. His Fantaisie Hongroise, Op. 65, No. 1 draws on the style hongrois — the Hungarian-influenced musical style that Brahms and Liszt also explored — with its characteristic pattern of slow, melancholy lassú followed by a fast, brilliant friss. The piece places Mertz firmly within the broader Central European Romantic tradition, demonstrating that his music is not a guitar curiosity but a legitimate participant in the mainstream cultural conversation of his era.
Legacy
Mertz died in 1856, leaving a body of work that was largely forgotten for a century. His rehabilitation began in the twentieth century as guitarists working to expand the Romantic repertoire discovered that the Bardenklänge and related works were not period pieces of historical interest but living music of genuine quality. Today Mertz is recognised as the finest guitar composer of his period and one of the most important figures in the instrument's entire history. His music belongs in the concert hall alongside Barrios and the great Spanish Romantic composers. Discover the Siccas Guitars collection and explore more great guitar pieces.
Frequently Asked Questions
Who was Johann Kaspar Mertz?
A Slovak-born, Vienna-based guitarist-composer (1806–1856) who wrote the most harmonically rich and emotionally ambitious guitar music of the mid-nineteenth century, including the collection Bardenklänge Op. 13.
What is his most famous piece?
The Tarantella (from Bardenklänge Op. 13, No. 6) is his most frequently performed work. The Elegie and the Fantaisie Hongroise Op. 65 are also central to the Mertz concert repertoire.
Why is Mertz considered important?
He brought the harmonic language of Romantic piano music — Chopin, Schumann, Schubert — to the guitar at a time when the instrument was largely ignored by serious composers, producing music of a quality that rivals the best piano miniatures of the era.
