So I've recently rolled up a bard, and noticed that quite a few of my spells were taking 26 seconds to hit full prep, rather than 20. Asked around a bit, and heard that it might be because of group-versus-not-group, but... ECRY takes 26 seconds to prep, and isn't a group spell. Any ideas why this is?

Also, while I'm here...

Did Screams get moved off of Performance? I found things saying they were going to be, but have seen nothing conclusive, and heard it both ways from various people in various places.

How much impact does Mojo have on one's performance? Specifically just, like, playing instruments. I've seen references to it mattering, but can't tell myself.