Johannes Wolf was a German musicologist, archivist and teacher, known for his research on medieval and Renaissance music, particularly Ars Nova, and early music notation. Born in Berlin, Wolf studied music history under Philip Spitta and Heinrich Bellermann at the Friedrich Wilhelm University. He completed his doctorate at theBerlin University in 1902. Wolf is viewed as one of the last great universal musicologists of the twentieth century, his published researches and editions ranging from the Middle Agesto the Romantic period. He devoted particular attention to music of the Reformation, the history of music theory and the interpretation of Ars Nova notation. He died in Munich.