These are very short exercises dealing with particular intervals and ensemble tuning issues. So far, there are seven exercises (with more to come) dealing with the following intervals: 1) perfect unison and perfect octave; 2) perfect 5th; 3) major 3rd; 4) minor 3rd as part of major, then minor chords; 5) perfect 4th as the inversion of a perfect 5th; 6) review of first 5; 7) minor 6th as part of chord inversions.