With musiconn.scoresearch you can search for melodies in the Bavarian State Library’s digitized complete editions of Beethoven, Händel, Liszt, and Schubert based on the output of an OMR-program (“optical music recognition”). This application has been developed by the Bavarian State Library within the project Specialised Information Service Musicology (musiconn) and enables you to directly search in the music of these four famous composers. You can enter your search via a virtual piano keyboard using the mouse or the keyboard. The output of the OMR program has not been verified and is therefore not error-free. musiconn.scoresearch is a prototypical application, and you are welcome to send us your feedback via mail.