Answer :
Music publishing did not begin on a large scale until the mid-15th century, when mechanical techniques for printing music were first developed. The earliest example, a set of liturgical chants, dates from about 1465, shortly after the Gutenberg Bible. Prior to this time, music had to be copied out by hand. This was a very labor-intensive and time-consuming process, so it was first undertaken only by monks and priests seeking to preserve sacred music for the church. The few collections of secular music that are extant were commissioned and owned by wealthy noblemen. Examples include the Squarcialupi Codex of Italian Trecento music and the Chantilly Codex of French Ars subtilior music. Hand copying persisted long after the invention of printing and music was widely disseminated in manuscript form well into the 18th century, both in personal copying and scribal publication.
The father of modern music printing was Ottaviano Petrucci, a printer and publisher who was able to secure a twenty-year monopoly on printed music in Venice during the 16th century. His first collection was entitled Harmonice Musices Odhecaton and contained 96 polyphonic compositions, mostly by Josquin des Prez and Heinrich Isaac. He flourished by focusing on Flemish works, rather than Italian, as they were very popular throughout Europe during the Renaissance. His printing shop used the triple-impression method, in which a sheet of paper was pressed three times. The first impression was the staff lines, the second the words, and the third the notes. This method produced very clean results, though it was time-consuming and expensive.
Around 1520 in England, John Rastell developed a single-impression method for printing music.[1] With his method, the staff lines, words and notes were all part of a single piece of type, making it much easier to produce. However, this method produced messier results, as the staff lines were often inexactly aligned and looked wavy on the page. The single-impression method eventually triumphed over Petrucci's, however, and became the dominant mode of printing until copper-plate engraving took over in the 17th century. This method was adopted and used widely by a Frenchman, Pierre Attaingnant.