Hi everyone,

I'm trying to understand the concept of relative/parallel scales.

First of all, would I be right in saying that relative scales is e.g. C Major and A Minor (6 steps apart) Say the riff was played in the key of C Major. Then one could play a solo in A Minor and the two together would sound well.

Parallel is when one e.g. plays a riff in C Major and solos in C Minor (or vice versa, I imagine). I imagine this is correct.

So, e.g. when one is playing a riff in a half-whole diminished scale, what would be the relative or parallel scales for that, if any? Are relative/parallel scales only used with modes?

Thanks!