NoteWorthy Composer allows "non-standard" key signatures such as D Freygish. Made after <a href="//commons.wikimedia.org/wiki/File:D_Freygish_Noteworthy_Composer.jpg" title="File:D Freygish Noteworthy Composer.jpg">File:D Freygish Noteworthy Composer.jpg</a>.
<a href="//commons.wikimedia.org/wiki/User:Hyacinth" title="User:Hyacinth">Hyacinth</a>
<span class="int-own-work" lang="en">Own work</span>