Contact the U.S. Copyright Office. It is an agency of the Federal Government.
1943; however, the Copyright Office record shows that copyright protection was terminated in 2004.
The only way of knowing would be to ask the copyright holder. There is no public record.
It would be violating copyright law.
Dozens, if not hundreds. Every time you create something new, it is automatically protected by copyright. Doodle a picture of a cat, you have copyright. Take a picture with your phone, you have copyright. Record yourself making up a song, you have copyright.
US Copyright Office is an office of public record for copyright registration and deposit of copyrightmaterial. Google it,,,,
You can record your own or get them of someone else but you have to have the copyright in words for people to read.
Yes; US registrations are searchable at the link below.
You would have a legal record of the creation and creation date of your work.
Without a license, yes. That is assuming you did not personally compose, perform and record the song yourself, or take a public domain composition and perform and record it yourself, either of which would mean you own the copyright on those recordings and it would not be copyright infringement to use the recording of the song any way you like.
Works by Stanley Myers will be protected through 2063; you would need a mechanical license to record his music.
You automatically own the copyright of your creative works of authorship, regardless of who gave you the tools to record it in a tangible form (i.e., in computer memory).
The first film with a US copyright is "Fred Ott's Sneeze" or "Edison Kinetoscopic Record of a Sneeze," a five-second motion picture from 1894. It was submitted to the copyright office as a sheet of still images.