[Attunement/heretical] Mercurians of Music: how do I balance this?

[JCD]

You can do this as you will, but normally these attunements include all prior knowledge anyway unless specified otherwise.

[ISNorden]

Originally Posted by JCD

You can do this as you will, but normally these attunements include all prior knowledge anyway unless specified otherwise.

I understand that rule; it's just that CD 6 on my "additional data" table is an either/or choice. I've reworded the effects in my official write-up on the Web to clarify what I meant.