Developing and managing application software in the field of music learning for delivery of multi-media content provided by museums and other tour venues for use on multiple types of wireless mobile devices; Developing computer software in the field of music learning; Developing customized software for others in the field of music learning; Developing customized software in the field of music learning for others; Development of software for secure network operations in the field of music learning; Development, updating and maintenance of software and database systems in the field of music learning; Software development and product development consulting in the field of music learning for kids; Software development in the field of music learning for kids; Software development in the framework of software publishing in the field of music learning; Software design and development in the field of music learning; Application service provider, namely, hosting, managing, developing, analyzing, and maintaining applications, software and web sites of others in the fields of music learning; Computer software development in the field of music learning; Computer software development and computer programming development for others in the field of music learning; Computer software development in the field of mobile applications in the field of music learning; Design and development of software in the field of mobile applications in the field of music learning; Design and development of computer software in the field of music learning; Design and development of computer game software in the field of music learning; Design and development of computer game software and virtual reality software in the field of music learning; Design and development of virtual reality software in the field of music learning; Design, development and implementation of software in the field of music learning; Design, maintenance, development and updating of computer software in the field of music learning; Designing and developing computer game software and video game software for use with computers, video game program systems and computer networks in the field of music learning; Research, development, design and upgrading of computer software in the field of music learning