Most are free-to-use (ie public domain or copyright-free) meaning the words can be copied and sung to at least one tune with no concerns about copyright or performance licensing - sometimes in a limited setting. Many of these hymns are old/traditional - but where possible a variety of styles and genres are included. A small selection of hymns that are still subject to copyright may also be included.
Suggestions about other free-to-use hymns that could be included are welcome: leave a message in the Comments box near the bottom of the page.
