Music Theory help: Can someone identify the key to this piece, and if it's minor, can you help me switch it to major? Tysm.

Answer:
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Once you know which major key signature you're in, you can find it's relative minor key in seconds! To determine the minor key, simply go down a minor third from the major key. You can think of a minor third as 1.5 steps, three half steps, or one whole-step and one half-step.