Cantana of Replenishment and Clarity

[zanderklocke]

I haven't been able to test this, but I'm curious how the mana effect from the bard song Cantana of Replenishment stacks with Clarity. I have heard that the mana part does not stack.

However, in relation to this, I am curious how lutes affect this song as it is listed as a strings instrument song. Do instrument modifiers only affect the hp regeneration part of the song, or do they also increase the mana gained back per tick as well?

Basically, what I'm trying to figure out is whether or not it is useful to play to play Cantana of Replenishment with a stringed instrument equipped to give greater mana regeneration when others in the group have Clarity.

Otherwise, I'm assuming just use the lower level mana song if people have clarity in group.