This is a poster using the "STARS" method of sight reading. Once you have unzipped the download file, there will be a 16"x20" and 20"x30" jpeg file. The 20"x30" file can also be printed as a 24"x36" poster.
The digital file is in a .jpg format, which is printable by all photo printers. I designed the poster for large format printing, so you shouldn't have any resolution issues. I have printed this poster in both sizes at both Costco and Wal-Mart, and they came out great at both locations!