Muse Group is a collection of well-known brands in the digital music and audio industry, including Ultimate Guitar, Audacity, StaffPad, MuseScore, MuseClass, and Tonebridge. They create software, communities, and content that cater to the needs of musicians, aiming to enhance their quality of life. With a focus on providing tools and resources for musicians, Muse Group has become a leader in the industry, offering some of the most popular software and communities for musicians worldwide.