What did Franz Schubert play in Trout Quintet?

Franz Schubert composed the "Trout Quintet," officially known as Piano Quintet in A major, D. 667. In this work, he played the piano part, which is complemented by string instruments: two violins, a viola, and a cello. The piece is renowned for its lyrical melodies and innovative use of themes, particularly the variations in the fourth movement based on his earlier song "Die Forelle" (The Trout). The quintet showcases Schubert's mastery in blending the piano with the string ensemble, creating a vibrant and harmonious dialogue.