As promised, here is the second installment of templates. I've created templates for Rock and Pop, Jazz, and Latin style scores.
Rock and Pop
*This template, as is, requires the LilyJAZZ fonts and stylesheet, all of which can be downloaded here.
In the future, in addition to these monolithic template files, I plan to provide another set of files that divide each of these template files into two (at least): a "content" file, which contains the music itself (assigned to variables) for each instrument, and a "structure" file, which arranges the staves and calls the content variables. It basically focuses on the look-and-feel and layout of the music on the printed page.
I'll also provide some more instruction on how to effectively utilize/customize the templates to your needs. But for now, play around with the files and if you have questions, feel free to email me with questions or post a comment below!