Beethoven's C Major WoO 54, officially titled "Lustig und Traurig" (Joyful-Sad), is a short, two-part bagatelle for piano that contrasts a cheerful C major section with a more somber C minor section, forming a simple A-B-A structure. Despite its brevity, the piece is a memorable and enjoyable work showcasing Beethoven's ability to create contrast through harmony and mood in accessible compositions. Thank you for your donation and support, whatever the amount of your donation means a lot to me.