File:Apple Macintosh - MusicWorks - The Merry Widow

Description
MusicWorks for Apple Macintosh computers by MacroMind. The music played by the software is Twinkle, Twinkle.

The first WYSIWYG music notation interface program was released back in 1984. MacroMind eventually become later MacroMedia and formed one of the most popular and later most hated standards on the web - Flash.