Shattered Kingdoms

It's been a long time since I played a bard, but does Int play a roll in being able to concentrate and dance at the same time?

I know dex is the main stat for it, but I can't remember if int helps you concentrate on songs while dancing or not.

Cha affects saves and what will be affected by your songs(for certain songs only)
Int controls on your ability to sing the song
Dex controls your ability to dance to the song.