The venue needs a license from the performing rights organizations, such as ASCAP and BMI.
Yes, if it is covered by copyright.
Yes if you are not using the film for your own personal use you need permission from the band or it violates copyright laws
If it is still protected by copyright, yes. Even if you don't intend to sell it, you still need "print rights."
You would need to go to the publishers individually; there is no clearinghouse.
You need to contact ASCAP. The American Society of Composers Authors and Publishers.
Yes, if you upload content containing music you did not create or own yourself, you need permission. This is because of copyright laws, which may result in your video being taken down should you violate someone else's rights.
You need permission from the copyright holder or an exemption in the law.
Yes. Assuming, of course that the music in question is still under copyright protection. There is no legal distinction for what type of performance or whether any money changes hands. You still need to seek permission.
If your use is exempted in the law, you would not need permission.
Legal recordings used in a classroom environment should not require additional licensing, but music used in public performance may require permission from the copyright holder if the venue is not already licensed.
Typically you would first need permission of the copyright holder.
If the patterns are under copyright then you need the permission of the copyright holder to sell them.