Question by Anonymous
For the C7: an altered dominant of some sort. I like to use the C7(b13, b9) scale, which is the same notes as F harmonic minor. (aka “Harmonic Minor of Destination”)
For the Bdim : you have to treat is as a passing diminished chord. The plain arpeggio B-D-F-Ab and the diminished scale are great places to start in order to create meaningful melodies.
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