StringTunes is a music publishing company providing publishing services for artists, composers, songwriters, companies and organizations, and full publishing services for contemporary instrumental music composer Don Rath Jr. A second focus of our company is in providing online music theory and composition for those seeking to learn about the tools of music, notes, barlines, repeat symbols, frequencies, time signatures, tempo, etc., All online course materials were written by instrumental music composer Don Rath Jr. Most all of the articles are in a multimedia format.