Key Signature Flashcards

I've wanted for a while to have a set of flash cards or something to help me learn key signatures, specifically with the goal of being able to identify them at a glance.

A while back I finally just drafted up a set with the mappings I wanted to learn. For flavor, I also threw in some entertaining descriptive comments from a table I came across on a popular authoritative academic website. A few friends have expressed interest in having a set, so I went ahead and scanned them. Here they are!