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Born in 1980 in Luxembourg, Jeff Herr studied music at the conservatories of Luxembourg and Maastricht. He currently works as a professional musician and drum teacher at the music school of Pétange.

Although he is mainly known for his various jazz projects (notably the Jeff Herr Corporation, Tele-Port, and the Sigurdur Flosason (De) Lux 4tet), Jeff Herr is above all a versatile artist inspired by a wide range of musical styles. His projects as a leader or sideman also include pop (The Gazmen), electronic music (Drops & Points by Pascal Schumacher), and rock (Lata Gouveia).

Jeff Herr has built a strong reputation on the European scene through performances in major clubs and festivals, as well as through numerous collaborations with internationally renowned musicians. In recent years, he has worked with artists such as guitarist Adam Rogers (on the album Manifesto by the Jeff Herr Corporation), Russian saxophonist Zhenya Strigalev (with Tele-Port), Icelandic saxophonist Sigurdur Flosason, and Iranian singer Shahab Tiam.

In 2015, he was named “Export Artist of the Year” in the jazz category.

Born in 1994, guitarist and composer Gilles Grethen is part of the new generation of Luxembourgish jazz musicians. Before discovering his passion for guitar and jazz, he was classically trained on the violin and clarinet. His deep appreciation for classical symphonic music, with its vast richness of colors, inspires his ability to make his guitar playing both orchestral and multidimensional.

Alongside his Gilles Grethen Quartet, with whom he has released three albums, he also performs with the Nu jazz band Linq and the duo CHROMA, featuring pianist Sebastian Voltz. His artistic focus, however, is on composing and arranging for various projects.

Recently, he created a big band repertoire for the Gilles Grethen Big Band and composed works for jazz quartet and string orchestra on his album State of Mind. Other projects include compositions and arrangements for film, such as the score for Catherine Dauphin’s short film Coffee & Water, as well as works for the Luxembourg National Jazz Orchestra and the Opus78 Orchestra, both commissioned by the Ministry of Culture.

Grethen holds a bachelor’s degree in jazz guitar from the Hochschule für Musik Saar and master’s degrees in both jazz guitar and jazz composition and arrangement from the Hochschule für Musik und Darstellende Kunst Mannheim.

Discography

Some musicians choose an instrument. Jérôme Klein chose three. And somewhere along the way, he decided that sticking to one musical genre wasn’t particularly interesting either.

Born and raised in Luxembourg, Jérôme Klein is a multi-instrumentalist, composer and producer whose musical world moves freely between jazz, indie pop, electronic music and contemporary improvisation. Equally at home behind a piano, vibraphone or drum kit, his approach is driven by curiosity, a fascination with sound and a desire to explore the spaces between musical genres.

Classically trained at the Luxembourg Conservatory before pursuing jazz studies at the Royal Conservatories of Brussels, Jérôme developed a musical language shaped by both the freedom of improvisation and the emotional directness of alternative pop and electronic music.

Over the years, he has become a familiar presence on the Luxembourgish and international music scenes, collaborating with artists including Stéphane Galland, Bojan Z, Manu Codjia, Ben Wendel, David Binney and Antoine Pierre. His musical journey has taken him to stages and festivals across Europe, Asia and North America, including Jazz à Vienne, Montreux Jazz Festival and numerous international tours.

In 2017, he founded KLEIN, his own creative playground where acoustic instruments, synthesizers, electronic textures and improvisation collide. With two releases and extensive international touring, the project established his distinctive approach to composition: atmospheric and introspective one moment, rhythmically explosive the next. His album Sonder reflects this fascination with contrasts, blending melancholic melodies, intricate rhythms and cinematic soundscapes.

Beyond KLEIN, Jérôme continues to explore new musical territories through a wide range of collaborations. His acoustic duo with longtime musical partner Pol Belardi brings together piano and vibraphone in an intimate, cinematic setting, while their trio SameSameSame, alongside drummer Niels Engel, takes a more energetic direction, drawing inspiration from electronic dance music, groove and spontaneous improvisation.

His work as a composer and producer also extends into alternative pop and songwriting, where his interest in electronic sound design meets a more direct, song-oriented approach.

Whether composing, producing or performing, Jérôme’s musical philosophy remains refreshingly simple: follow the sound, embrace the unexpected and never feel obliged to fit into a particular box.