Read Theory of Music Workbook Grade 1 (2007). One of my favorite music theory books to come out in years is Music Theory Remixed, since it includes jazz, pop, and rock, analysis in addition to the typical masterworks that we are accustom to seeing in general music theory texts. This textbook covers the traditional four semesters of music theory, from intervals to post-tonal theory and serialism. Music Theory Grade 1. Popular Music Theory Grade 1 will develop your music notation skills, help you identify intervals, familiarise you with other instruments and take a look at time signatures