I have a Kindle and I have song words and music (in staff notation) on it. I converted my original Open Office document to pdf and transferred that to the Kindle. It's OKish. If you view in normal portrait format, the print is too small really. Turn it on it side and set it up as landscape and it is better and the notation is reasonably readable but you need two Kindle pages per document page. I would not work from it, but it is potentially useful as an aide-memoire. The document has an index and you can go to the exact song by selecting the page from 'GoTo' in the menu.

I have not taken it with me to a folk club as I also keep my song words on my Blackberry (using Documents to Go) which is much more convenient for carrying about. Again useful as an aide-memoire.

I have considered sending the original document to Amazon for conversion but have not yet tried that so don't know how effective it would be.