To use a ChoreoKeeper with music/documents printed in landscape mode, you’ll need fold-out sheet protectors with no seam between the two pockets. (We don’t carry these, but Staples does; scroll down to get the link.)
These hold papers up to 11” x 17” in landscape mode. ChoreoKeeper clips keep the fold-out sheet protectors from sagging.
This will work even if the paper isn’t a full 11” x 17”. It’s a good solution if your music or document is an odd shape.
Staples carries the fold-out protectors with no seams.