They do, if they're not licensed.
No, song covers are not copyright free. Covering a song without permission from the original copyright holder can lead to legal issues.
no you dont
i really dont know if you can do that
Even if you buy a recording of a song, you've only paid for that one instance of it; copying it (say, to share with a friend) is copyright infringement.
I dont want to be lonely
That would be copyright infringement if the original song was protected.
You can only copyright a song if you are the song's author. You can't copyright someone else's song. Although the author can sell you their copyright.
Each song has its own copyright year.
Singing a song in private for personal enjoyment is not considered copyright infringement. However, performing a song in public or recording and distributing it without permission from the copyright holder may be considered infringement.
The song "Heigh-Ho" from Disney's "Snow White and the Seven Dwarfs" is still under copyright protection. The film was released in 1937, and while the original film's copyright may expire in 2033, the song’s specific arrangements and recordings are protected by copyright law. Therefore, using the song without permission could infringe on copyright rights.
It is probably copyright infringement. There are exceptions, though.
The only way to be certain is to contact the copyright holder yourself.