Pipe Music and Key

What musical key does the bagpipe play in?	Can you describe the traditional types of pipe music?
What tunes are played for a wedding?	What is Piobaireachd?
What tunes are played for a memorial service?	Are there arrangements for bagpipe and concert band/orchestra?
What can and cannot be played on the bagpipe?	What can you tell me about "Orkney Wedding with Sunrise"?
Can you recommend some recordings?