Excellent work, Chris. I love sites like these and yours is a welcome addition - long may it grow.

Just one suggestion - ignore if of no relevance: Would there be a place on the site to offer the tunes in .abc format (text file) as well as PDF? The beauty of .abc is that it can be imported by many other music problems and can then generate both music and midi. My own program (Harmony Asistant) imports and exports music files in a huge variety of formats - including .abc.