Bards - a mana regen question

[Swish]

So the typical situation, your group needs a mana break, some of the group need a bit of health regen to get them back to full...

The casters all need their clarity fix of course. Do you...

1. Twist just mana song (and afk perhaps)
2. Twist 2 mana hits and a restoration hit with lute applied?
3. Twist 2 mana hits and a cantata of soothing with lute applied?

What's the mana regen per tick on cantata vs mana song?

Asked group members to tell me but they come up with all kinds of weirdness.

Quite the dilemma I'm sure you'll agree!