So I have a piece written in C, with very few accidentals. However the bass resides mainly on A. Am I correct in assuming that most probably it means the piece is actually in A minor?
Later on I use a Ab and Eb to modulate the bass to G, am I again correct in assuming that section is probably in G minor, since G major doesn't feature B flat and E flat, but G minor does?
Of course a more extensive analysis would be necessary to know for sure, but I'm just trying to verify whether my hunch reasoning is correct.