Thanks for the reply, noticingthemistake.

So am I correct in assuming you'd treat the G7 as the tonic chord, and resolve back to it as the root of the mixolydian scale (G), right?

And if that's the case, I'm a little confused as to why the IV - V progression is the strongest. if you're thinking of the FMaj-G7 Progression in terms of the C Major Scale, it's IV - V, so why doesn't the I of that scale work? (or would that pull the tonic sound back towards C Major?).

Alternately, If you're thinking in terms of G Mixolydian, with G as 'I', you've got a VII - I progression, so why aren't the IV and V of that scale "strong" progressions (CMaj and Dmin)?

Apologies for bombarding you with more questions :-)

Thanks in advance if you find the time to reply!

-Markus