# What is the chord in figured bass when the bass note is B flat with 7 underneath, in the key of D flat major?The note before is A flat with 6 underneath (iiib???) and the oneafter is F with 6...

What is the chord in figured bass when the bass note is B flat with 7 underneath, in the key of D flat major?

The note before is A flat with 6 underneath (iiib???) and the oneafter is F with 6 underneath (Ib).

aargodale | Student

You have given only minimal information.  Let us analyze the possibilities.  You state that the piece is in D-flat Major.  You give the bass note with the figuring provided.   In the first sonority, A-flat is the bass and 6 is given as the figure.  Since 6 denotes fist inversion, we must accept that this is first inversion f minor, a iii6 chord in D-flat Major.  In the second sonority, B-flat is the bass and 7 is given as the figure.  This denotes a 7 chord in root position.  In D-flat Major, a seven chord built on B-flat is B-flat minor seven, or B-flat, D-flat, f, and A-flat.  In D-flat Major this is a vi7 chord.  In the third sonority you provide, F is the bass and 6 is given as the figure.  Again, this denotes first inversion, therefore the sonority must be D-flat Major in first inversion.  This progression is not very strong movement: iii6, vi7, I6, however there is no reason why it could not occur.