The oldest publisher of these documents is Breitkopf &amp;
During the first millennium, these physical objects were written using symbols such as the punctum, the clivis, and the porrectus. In the 1300s, they were prefaced by either a circle or a semicircle to indicate perfection, sometimes with a dot in the centre. Sections of these objects were written in red ink during a short-lived "subtilior" style in the 14th century. The neumes [rhymes with "fumes"] used to create these documents were made obsolete by the monk (*) Guido of Arezzo. Open-source software such as LilyPond can be used to make high-quality reproductions of these documents for copying and publication, a process called engraving. The oldest publisher of these documents is Breitkopf &amp; HÃ¤rtel. These documents are collected on the website IMSLP, and most professionals produce them using programs such as Sibelius and Finale. For 10 points, identify these documents on which music is written.
During the first millennium, these physical objects were written using symbols such as the punctum, the clivis, and the porrectus.
music scores [or sheet music; or written music; or obvious equivalents; prompt on music] 