Sibelius Software, Ltd., doing business as Sibelius, offers music notation software. The company provides products for composition, coursework, testing, reference, playback, publishing, authoring, and e-commerce to cover various aspects of music. It offers Sibelius 5 for writing, playing, printing, and publishing music notations; Sibelius Sounds that creates playback, CDs, and audio files; PhotoScore Ultimate, which scans, transposes, and arranges music; G7, a tool for guitarists; Scorch to view, play, customize, and print scores on the Internet; Sibelius Internet Edition, a solution for publishing sheet music on the Internet; SequenceXtra that adds interactive music to users' multimedia applications; and Sibelius Logickeyboard, an application specific keyboard. The company also provides Sibelius Student, a tool for music homework; Groovy Music for beginners; O-Generator World Music to learn the African and Latin styles of music; O-Generator Learning to Compose for writing rock and pop songs; Sibelius Instruments, an interactive encyclopedia of instruments; Sibelius Starclass to teach music to children; Sibelius Compass, a program that helps students to learn how to compose music; Musition 3 to learn music theory; Auralia, a software for ear training and aural tests; and Sibelius Notes, a resource pack for teaching music. In addition, it offers professional development and training, and demo and presentation services, as well as technical support solutions. The company serves musicians, universities, teachers, students, professionals, and amateurs; and schools in the United Kingdom, Australia, and New Zealand. It has operations in California and Australia. The company was founded in 1993 and is headquartered in London, the United Kingdom with additional offices in San Francisco, Adelaide, and Tokyo. As of August 2, 2006, Sibelius Software, Ltd. is a subsidiary of Digidesign, Inc.