Hello everyone,
I am trying to learn counterpoint with Fux. Something that I've never understood - in Fux 16th century species counterpoint, we stay within a key for 8 bars or so, but how do you do counterpoint where you are moving around harmonically? Even in simple terms - of bar 1 in C, bar 2 in F, bar 3 in G, and bar 4 back to C - how would you reinforce the harmony via counterpoint? What if a modulation was added? So we would do C, F, D major, G (new key)?
It seems the Fux rules imply looking at the cantus firmus note rather than the harmonic function. So, if the CF note is C, then I am allowed 3, 4, 5, 6, and 8 intervals above, right? So if the C exists within the context of C major would be different than if it was A minor, right? So a 3rd above C being E would be part of A minor and would work, but the 4 as an F would not work, right? Because that could emphasise F major not A minor. So if I am harmonically in A minor, how would the counterpoint serve that function even though in both cases, the cantus firmus was playing a C?
Thanks!