To make your own recording of someone else's music, contact the Harry Fox Agency for mechanical rights. To use someone else's recording, you need a mechanical right and a master right (and, if you want to use it in a video project, a synchronization right); master and synch rights come from the labels and publishers directly.
If you're asking about how to obtain a copyright, take a look at this article: http://www.knowthemusicbiz.com/index.php/BIZ-WIKI/Music-Publishing.html
Since the music to Les Miserables is copyright, free copies of the sheet music are illegal. Without endorsement, you can purchase sheet music for this musical, below.
The owner of a copyright in music has the exclusive right to perform the work
The music industry relies on copyright protection to sustain itself.
When you purchase a painting, you own the physical artwork but not necessarily the copyright. The artist typically retains the copyright unless they transfer it to you in writing.
copyright 1962 by Regent Music Corporation. copyright renewed by Jewel Music Publishing Co. Inc.
Depending on which arrangement the piece is from, you may have to buy it due to copyright laws. Anyone is able to purchase the piece of music with permission.
purchase a copy from a reputable online or offline source
maybe because it has really bad stuff in it or the music is copyright
The book has a copyright. The music has a copyright. The musical production has copyright. The movie has a copyright. The sound track has a copyright. Music not used in the movie has copyright. The play was first produced on Broadway in 1957, meaning it is copyrighted until 95 years later. The movie was produced in 1962 and has 95 years of copyright. The sound recordings of the music produced prior to 1973 have no federal copyright but are protected by state laws until 2067, not including those works that were also part of the 1962 dramatic audiovisual work, which are covered by federal copyright for 95 years.
There is no minimum age for copyright protection.
Any music (or movie, game etc.) that you purchase is for your own private use. You are not authorised to distribute or broadcast the music in anyway unless you are licensed to do so by the holder of the copyright and distribution rights.