Quixote can help you create professional looking sheet music of all sorts.
One big project I did in 2008 was on request of the well-known Dutch publishing company "Querido". This involved typesetting 50 children songs on text by the famous Dutch writer "Annie M.G. Schmidt". These all had piano accompaniment. More information is here "Zing mee met Annie M.G." (in Dutch).
Quixote can also help you typeset your own arrangements or compositions, if you lack the time or knowledge to do it yourself.
If you have other request regarding sheet music typesetting, please let me know. I can probably help you.