I've been playing around with the old tune "Sunny"; Am,C7,F7,Bm E7 in the key of C(?). Trying to use "B" major scale notes doesn't work as well as "B" minor scales over the Am. What part does the key signature play ? assuming essentially I'm playing a 7th degree from a C scale over the Am(a 6th degree). Would you number this progression a Vl,l,lV,Vll,lll ? thaanks be blessed