The latest generation of the world.s best-selling music notation
software, Avid Sibelius 7 is sophisticated enough to meet the demands
of top composers, arrangers, and publishers, yet simple enough for
beginners and students.

Work quickly with the brand-new, task-oriented user interface.
Experience your scores in stunning clarity with the exclusive,
professional-quality sound library. Collaborate more easily thanks
to full MusicXML interchange support and other sharing options.
With all these advancements and many more, Sibelius 7 is the
fastest, smartest, easiest way to write music

http://www.sibelius.com/products/sibelius/7/index.html