Hook theory II Summary 2.5 Question 2 viio/vi

music theory
1

I keep working out the bass note of viio/vi to be 5

But the answer says #5

Simlarly IV/IV I get 7 not b7

Can anyone explain how the correct answer is achieved?

Thanks

2

Hi @vp_99, this is a great question. Thank you for asking. Using the procedure from Appendix A of Hooktheory II, the first step is to line up two scales: the original major scale, and a major scale that starts on scale degree six of the original scale, as shown below.

646524ed00ad48d94d62967ae12b3225fb5866f575b.png813×1116

The next step is to build the vii° chord (scale degrees 7, 2, and 4) in the new scale, as shown below

64751d73a73e4ec7418edf06e8eaff2701b7373e69d.png813×1116

Finally, you look at how the scale degrees from the second scale line up with the original scale as shown below.

64879c06af4d966da883e60665d6e85d2917f6fe487.png813×1116

The scale degrees of vii°/vi are thus #5, 7, and 2 with #5 on the bass.

You can follow an identical procedure to determine the scale degrees of IV/IV. The final result is shown below. I hope this helps.

649b910339a8f935d5c6d8a99a2f4cd9d3554cb93a2.png813×1116