[1] There he received instruction from Swiss composer Klaus Huber on the rudiments of composition and instrumentation, attending related Seminars and Master Classes from the likes of György Ligeti, Luigi Nono and Luciano Berio, who routinely taught in Freiburg on their way to nearby Donaueschingen Festival and Darmstadt International Summer Courses for New Music.

In 1996 Martignon started in earnest a dedicated solo career, performing in music festivals, theaters, clubs and colleges worldwide, releasing in 1997 a first of six albums as a leader, Portrait in White and Black (John Storm Roberts, Latin Jazz, ISBN 0-02864681-9, page 242) featuring Barretto and Donny McCaslin.

[5] In it Martignon displays his Jazz prowess alongside a Classical perspective in orchestration, combining original strings with modern brass and woodwind harmonies and Afro Cuban rhythmics in Bach's Aria Erbarme dich, from the St Matheus Passion.

Martignon wrote the scores for one feature film, Septimo Cielo, a short for HBO, From Dusk till Dawn and for two plays for Repertorio Español in New York, Ana en el Trópico and award-winning Cita a Ciegas.

Alongside his performing career, Martignon has been actively engaged in the musical training of young generations, teaching Jazz Composition at the Hochschule für Musik und Theater München, and at the Ludwigsburg University of Education, in Germany.