The Serenade Op. 41 is based on Beethoven's Opus 25 for flute, violin and viola. Although the version for piano and flute (or violin) did not originate from the composer - but was probably undertaken by the composer Franz Xaver Kleinheinz. Beethoven did, however, look through it and substantially improve some passages, as he assured his publishers Hoffmeister & Kühnel in September 1803.