Triskaidekaphonia

Here is a short artist description:

Frank Gratkowski is a German saxophonist and composer who works in the field of contemporary improvised music, playing various woodwind instruments and developing his own techniques and concepts. With a career spanning multiple projects and ensembles, Frank Gratkowski's music falls under the genres of free jazz, avant-garde, and experimental, showcasing his unique approach to sound and composition.

Translation to English (UK) is not necessary as the text is already in English, but I can provide the same text with minor adjustments to conform to UK English spelling and vocabulary, which in this case is not required. The text remains the same:

Frank Gratkowski is a German saxophonist and composer who works in the field of contemporary improvised music, playing various woodwind instruments and developing his own techniques and concepts. With a career spanning multiple projects and ensembles, Frank Gratkowski's music falls under the genres of free jazz, avant-garde, and experimental, showcasing his unique approach to sound and composition.