Sibelius 5 is a program for writing and engraving music. It is used by composers, arrangers, music publishers, copyists and performers to produce professional-quality music notation. As of September 2008, there are 180,000 registered users of Sibelius in more than 100 countries.
Sibelius 5 is used extensively in music education to help students submit work and write music more easily.
It is also available in Spanish-, Italian-, French-, German- and Japanese-language versions.