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Acknowledgements

The training aids by Choralia are essentially free thanks also to the cooperation of other web sites and software authors that offer their products and services free of charge, or for small donations and affordable license fees. We wish to specifically acknowledge:
 

The Choral Public Domain Library, cipoo.net and the The Classical Music Archives, which provide most of the music scores used by Choralia, in MIDI format and other electronic formats
Sheet Music Online, which provide a large collection of sheet music via internet
Myriad Software, which provide music editing software at affordable prices
Tuukka Toivonen, Masanao Izumo and others developers of Timidity/Timidity++, the software synthesizer used for CMS, and Midi Music Contest, which provide free sound samples for Timidity
Jordan Russell's Software, who developed the Inno Setup Compiler, used to create the CMS executable files
Altervista, which provide part of the web space, and PHPJunkYard.com, which provide some useful PHP scripts