The Fifth Mode and the Fourth Seventh Chord in the Key of C

If we're playing a tune in the key of c, these modes should be our guide. We can improvise using a sonic color palet based on those modes. The d minor seven is the diatonic two cord. Rag this is a secondary dominant cord. It's what i'm going to call the taomin dominant cord. These are really important because you often see entire tunes made up of diatonic seventh chords and their secondary dominance.