What kind of old and forgotten temple would be appropriate for Forgotten Realms?

Are there musical groups in Forgotten Realms, or are entertainers a solo act only?

Where you would suggest I place the Keep on the Borderlands in the Forgotten Realms?

Where the Stonelands start and finish?

If a sect of Bane had two clerics which one would be the leader reporting to Fzoul?

What would be the consequence of freeing Kultulmak god of kobolds?