https://www.musical-u.com/learn/finding-the-tonic-in-major-keys-part-two/
In part 2 of this exploration into finding the tonic, learn how to apply your new skills to real music. These short exercises will take you a long way to mastering this skill! https://www.musical-u.com/learn/finding-the-tonic-in-major-keys-part-two/