I have a few questions and I'm not sure a resource to look them up.

1. Do songs still decrease damage output?

2. If I want to start doing speed runs for tomes on my bard, what is the best playstyle? For example, AOE everything to death and keep TP song up or use the magic debuffing song so the casters can hit harder?

3. How many mobs need to be around for our AoEs to be more efficient than single target damage? I assumed anything in groups ~4-5, but I wasn't sure if this has been calculated yet and I should be AoE'ing on groups of 3.