The Serenade op. 41 is based on BeethovenŒÍs Opus 25 for flute, violin and viola. Although the version for piano and flute (or violin) did not originate from the composer Œ_ but was probably undertaken by the composer Franz Xaver Kleinheinz Œ_, Beethoven did, however, Œñlook through it and substantially improve some passagesŒî, as he assured his publishers Hoffmeister & Kí_hnel in September 1803. With the accolade Œñrevue par lŒÍAuteurŒî, the arrangement was soon widely disseminated. We are publishing a revised edition of this charming serenade, incorporating the latest scholarly Beethoven research (to date HN 301). It contains new, extensive texts concerning the genesis and source situation.