How do you decide what key a song should be in? Do you live in a relative world where the 12 keys are basically interchangeable, except for logistical things that might set them apart, such as how they suit your vocal range or whether some number of sharps makes for easier fingerings? Or do you live in an absolute world where the keys have truly distinct harmonic identities? Curious to hear whatever you have to say about this.
the 2 most important factors are- vocal range, and whether or not i have recently done something similar in the exact same key. i used to get attached to the original key, but then i realized that it is a smart and professional move to find the best key for your voice before you record it.