Mosaic is a now abandoned software programme for producing music originally appearing as Professional Composer. Mark of the Unicorn, the company that produced the software, decided to update Professional Composer and the result was Mosaic. No media release was ever produced by the company about Mosaic's demise and the product was dropped. Several factors can be theorised: Sibelius and Finale were the competitor notation packages; they were developed for both Macintosh and Windows platforms. Mosaic was only available for Macintosh computers and thus Sibelius and Finale had far larger market opportunities.
