What Key Signatures Tell Us

This video briefly reviews what the “Do Re Mi Making Scales” video taught about Major scales, then shows how we can learn the names of sharps and flats in order, as well as the names of the major scales that go with these sharps and flats just by looking at and using the key signatures. The video culminates by showing and explaining how the Circle of 5ths works as well.
This video along with many others is on the "karla crossett" channel.