In collaborations with jazz musicians and classical musicians, the focus has traditionally been on the composer. In this thesis, I have focused on the musicians in the project instead. The most important thing was to explore what could be learnt in such meetings and what challenges you might face. I have examined this in four topics: 1. Composition 2. Interpretation 3. Rehearsing 4. Improvisation In the project, I composed five pieces inspired by both jazz and European classical composers. To understand classical phrasing and to implement it in my own playing, I studied for classical teachers. In order to include classical musicians, so I developed several methods. Working closely with the classical musicians made the contrasts between the genres clearer. The contrasts between jazz and the classical way of working and playing made my tendencies more apparent and I became more aware, and in control over the way I played. / <p>Ljud och bildupptagning gjordes under konserttillfället. Erik Tengholm vikarierade då på trumpetplatsen.</p><p>Kompositionerna i arbetet och de medverkande var som följer.</p><p><em><strong>Styrfart</strong></em></p><p>Komposition: Sebastian Jonsson</p><p>Medverkande:</p><p>Sebastian Jonsson, altsaxofon</p><p>Kajsa Nilsson, tvärflöjt</p><p>Sabina Scott, oboe</p><p>Hugo Olsson, klarinett</p><p>Astrid le Clercq, klarinett och basklarinett</p><p>Victor Andersson, altsaxofon</p><p>Fredrik Jergle Almquist, fagott</p><p>Britta Virves, piano</p><p>Anders Langørgen, kontrabas</p><p>Jonas Bäckman, trummor</p><p><em><strong>The Crow</strong></em></p><p>Komposition: Sebastian Jonsson</p><p>Medverkande:</p><p>Sebastian Jonsson, altsaxofon</p><p>Kajsa Nilsson, tvärflöjt</p><p>Sabina Scott, oboe</p><p>Hugo Olsson, klarinett</p><p>Astrid le Clercq, klarinett och basklarinett</p><p>Emma Granstam, trumpet</p><p>Lars Ullberg, trombon</p><p>Anders Langørgen, kontrabas</p><p><em><strong>8</strong></em></p><p>Komposition: Sebastian Jonsson</p><p>Medverkande:</p><p>Sebastian Jonsson, altsaxofon</p><p>Kajsa Nilsson, tvärflöjt</p><p>Hugo Olsson, klarinett</p><p>Astrid le Clercq, klarinett och basklarinett</p><p>Emma Granstam, trumpet och flugelhorn</p><p>Lars Ullberg, trombon</p><p>Anders Langørgen, kontrabas</p><p>Jonas Bäckman, trummor</p><p><strong><em>Golem</em></strong></p><p>Komposition: Sebastian Jonsson</p><p>Medverkande:</p><p>Sebastian Jonsson, sopransaxofon</p><p>Kajsa Nilsson, tvärflöjt</p><p>Sabina Scott, oboe</p><p>Hugo Olsson, klarinett</p><p>Astrid le Clercq, klarinett</p><p>Victor Andersson, altsaxofon</p><p>Fredrik Jergle Almquist, fagott</p><p>Emma Granstam, trumpet</p><p>Lars Ullberg, trombon</p><p>Britta Virves, piano</p><p>Anders Langørgen, kontrabas</p><p>Jonas Bäckman, trummor</p><p><em><strong>Den inte så lille tennsoldaten</strong></em></p><p>Komposition: Sebastian Jonsson</p><p>Medverkande:</p><p>Sebastian Jonsson, altsaxofon</p><p>Kajsa Nilsson, tvärflöjt och piccola</p><p>Hugo Olsson, klarinett</p><p>Astrid le Clercq, basklarinett</p><p>Emma Granstam, trumpet</p><p>Lars Ullberg, trombon</p><p>Britta Virves, piano</p><p>Anders Langørgen, kontrabas</p><p>Jonas Bäckman, trummor</p><p></p>