From Sibelius Group:
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.