Creation of computer programs; planning and implementation of database and network projects, as well as brokerage or sale of the EDV hardware and software used; consulting of individuals or companies on computer science issues, data security and data protection issues, and on all risks of EDV and in particular network use; implementation of comprehensive solutions for office communication or other forms of EDV use, or provision of services within the framework of project collaboration; planning and implementation of music productions of all kinds and media, as well as rental or sale of musical instruments, music equipment, and music software; holdings; acquisition, management, encumbrance, and disposal of real estate, as well as copyrights, patents, and licenses; financing; provision of guarantees, sureties, and other securities in favor of affiliated companies or third parties.