Wednesday, March 5, 2008

Question of the Day March 5

When given clues to a chord such as the key, figured bass, and the bass note, how does each clue help you determine the root position chord and the correct roman numeral?

2 comments:

Woda said...

The figured bass tells you weather the bass note is in root, 3rd, 5th, or 7th position. Then you write the triad or 7th chord in root position above the bass note. The root of the triad or 7th chord that you just wrote, compare that note to the key that is given. For example: If the figured bass is 6 and the bass note is a “B”, then that means the “B” is the third of the chord. Then you write a triad above the bass note. Which is “G, B, D”. Next, the key is B Major, so “G” is the sixth note of the B Major Scale. So the roman numeral is a lowercase 6 (vi).

Randall Sorensen said...

Good answer. It might be better to say that you build the chord around the bass note after you have determined what part of the chord it is (R,3, 5, 7). Since the notes can be in any order above the bass in real music.

The music example is good except in B major it would be G# B D# not G B D for the vi chord.