Today’s post is an excellent analysis by David Bennett Thomas of Wagner’s Prelude to Act 1 from Tristan and Isolde. In his videos, he analyzes Western European music with both traditional music theory (below the music) and jazz/pop changes (above the music). This will help the musician who is familiar with reading chord changes (C7, g-, etc) a chance to understand the harmonic relationships in more complex musical forms. Confused? Watch the videos in the Music Theory category. Will this help your bass playing? I think it will.
In music, chromatic mediants, “are altered mediant and submediant chords.” A chromatic mediant relationship is a relationship between two sections and/or chords whose roots are related by a major third or minor third, contain one common tone, or share the same quality, i.e. major or minor. For example, in the key of C major the diatonic mediant and submediant are E minor and A minor. Their parallel majors are E major and A major. The mediants of the parallel minor of C major (C minor) are Eb major and Ab major, and their parallel minors are Eb minor and Ab minor, totaling six chromatic mediants for that key. Thus an E major chord is one of six chromatic mediant chords in C major and the keys of C major and E major share a chromatic mediant relationship.
Analysis from ‘Tristan’ Prelude