The Single Interface for Music Score Searching and Analysis project (SIMSSA) is teaching computers to recognize the musical symbols in digital images of musical scores, linking materials from the shelves of libraries and museums from around the world in a single digital forum. The SIMSSA project seeks to improve Optical Music Recognition (OMR) technology. Projects include ELVIS, CANTUS, jSymbolic, Liber Usualis, Late Medieval Liturgical Offices (LMLO).