Franz Schubert left us ~600 songs when he died at age 31. Many years later composer Franz Liszt arranged some of these songs to be played by piano alone, where the performer is able to let us listen to the voice of Schubert and the piano accompaniment combined.
Here is pianist Yuja Wang playing one of these arrangements of Schubert’s song “Auf dem Wasser zu Singen” (Singing on the water)