Q-1 yes
Q2 - scan through some of these threads in the music section for Royalty Free Music resources. Some are free and others you must pay a bit to use in public.
viewtopic.php?f=14&t=15664viewtopic.php?f=14&t=15635viewtopic.php?f=14&t=13827Suggest you ALWAYS read TOU (terms of use) before using in public - many times music is only for personal use. Just because the site says the music they have on their website is public domain, doesn't make it necessarily true or usable in public.
These are traditional classical pieces...
Kevin MacLeod's Canon in D might work - 5:55 min.
http://incompetech.com/m/c/royalty-free ... rch=SearchPrelude in C by Bach might work too
http://incompetech.com/m/c/royalty-free ... =ClassicalThen there's this one
Brandenburg Concerto No. 4 in G, Movement I (Allegro), BWV 1049
http://incompetech.com/m/c/royalty-free ... =ClassicalFinally this last one
Consort For Brass
http://incompetech.com/m/c/royalty-free ... =ClassicalKeep looking on the site in the classical area (scroll down) and you will eventually find the epic Wagner "Bridal Chorus" too.
Read his terms of use. He requires credit somewhere in the show. I usually put them at the end.
I haven't listened to all those all the way through but they might do in a pinch.