The Legal side of Things... Thing 19

All music in the Mutopia Project is free to download, print out, perform and distribute. 1961 pieces of music are now available. Save our bandwidth - use a mirror! Canada | Portugal Home | Browse the Archive | Advanced Search | License Details | How to Contribute | In Progress | Contact and Discussion License details All music on Mutopia may be freely downloaded, printed, copied, distributed, modified, performed and recorded. Details of the licenses used for the music are given below. Follow the links given for more information on the licenses, and the full legal texts. All the music is available under Creative Commons licenses which designate the music as free cultural works. Creative Commons Attribution-ShareAlike (4.0 / 3.0 / 2.5 / 2.0 / 1.0) This license says that you are free to copy, distribute, display and perform the work, make derivative works, and make commercial use of the work. You must, however, give the original author credit, and if you alter, transform, or build upon the work, you must distribute the resulting work under an identical license. For more information, use the links above to visit the appropriate areas of the Creative Commons website. Creative Commons Attribution (4.0 / 3.0 / 2.5) to copy, distribute, dis  This license says that you are free play and perform the work, make derivative works, and make commercial use of the work. You must, however, give the original author credit. For more information, use the link above to visit the appropriate area of the Creative Commons website. Public Domain The contributor of this music has dedicated their contribution into the public domain. You can do what you like with this music - print it out, sell it, change it, distribute it, record it, and perform it, etc. For more information, see the Creative Commons website at: http://creativecommons.org/licenses/publicdomain/ Home | Browse the Archive | Advanced Search | License Details | How to Contribute | In Progress | Contact and Discussion Disclaimer: The Mutopia Project is run by volunteers, and the material within it is provided "as-is". NO WARRANTY of any kind is made, including fitness for any particular purpose. No claim is made as to the accuracy or the factual, editorial or musical correctness of any of the material provided here.

I found this website easy to use and it stipulates the Licence Agreements very clearly as you can see above.
It is an excellent website and a brilliant one for anybody doing music you can download the sheets of music of choice Eg. by composer /instrument this I feel would be very informative and useful for professionals or sudents in this field.