Jun 13, 2016 If this were a G7 chord, it would be spelled B-D-F-G. V6/5. V4/3. This is a 2nd inversion chord, with the 5th in the bass. In interval of a 4th refers.... then the two pitches make an octave, the most basic of musical intervals. ... Didn't know your ear could calculate exact ratios between frequencies, did you? ... F, and G major triads), but the minute you try a ii chord (D) you're in trouble, as you.... Triad Inversion (Music Theory Lesson 23 - part 1) ... Like intervals, triad