BobM had an interesting idea that might benefit from a new thread and a visual aid.
So heres that 5 row chunk of a bass-button chart, centered on C:
<PRE>[pre]Counter-bass D A E B G♭
Fundamental bass B♭ F C G D
Major (M) B♭M FM CM GM DM
Minor (m) B♭m Fm Cm Gm Dm
Seventh (7) B♭7 F7 C7 G7 D7
Diminished (dim) B♭d Fd Cd Gd Dd[/pre]</PRE>
Heres the degrees of the major scale:
<PRE>[pre]Counter-bass 2 6 3 7 -
Fundamental Bass - 4 1 5 2[/pre]</PRE>
And heres some chords built on only those notes:
<PRE>[pre]Major (M) - IV I V -
Minor (m) - - - - ii
Seventh (7) - - - V7 -
Diminished (dim) - - - - vii(d)[/pre]</PRE>
(You can use pre /pre tags in brackets to retain tabbed formatting)
As a conceptual teaching idea, I had an idea of using a little masking tape to delineate an area in the LH, to develop the idea of a Key Cluster; that is to say, the root bass/chord and the 2 rows either side of it to explore the myriad possibilities of just this one small segment of the Stradella system. As its all easily transposable a lot of this only needs to be learnt once. And heres a thought, just by using the 7 notes in a Major scale its possible, using equal note values to have 48 variations (?) a lot anyway, that are all under the fingers and in one place.
So heres that 5 row chunk of a bass-button chart, centered on C:
<PRE>[pre]Counter-bass D A E B G♭
Fundamental bass B♭ F C G D
Major (M) B♭M FM CM GM DM
Minor (m) B♭m Fm Cm Gm Dm
Seventh (7) B♭7 F7 C7 G7 D7
Diminished (dim) B♭d Fd Cd Gd Dd[/pre]</PRE>
Heres the degrees of the major scale:
<PRE>[pre]Counter-bass 2 6 3 7 -
Fundamental Bass - 4 1 5 2[/pre]</PRE>
And heres some chords built on only those notes:
<PRE>[pre]Major (M) - IV I V -
Minor (m) - - - - ii
Seventh (7) - - - V7 -
Diminished (dim) - - - - vii(d)[/pre]</PRE>
(You can use pre /pre tags in brackets to retain tabbed formatting)