Key repetition

Don't think about it too much. But a whole album in one key would be a bit too much for me ;-)

That said: It works well for me to sometimes consciously use a less obvious key, it challenges me professionaly and forces me to come up with solutions that I wouldn't have come up with otherwise.

sadly such key data sites tend to be wrong a lot of times. At least the ones I saw about the analysis of a piece. Like the ones of mine 😁 seems like they only take the first or last chord

do not limit such things. Especially when it feels right. Despite the beauty that every key can shine differently (I feel like every key has its own magic) I would never stop composing a piece to any limits. It's art. So go for G-minor as long as it feels right. Some singer always stay in the same key(s) for a high amount of songs and nobody notices. (but that is also related to finding the right key/range of a voice.) What can be interesting though is to "test" other keys by transposing/bend after recording. Maybe another key sounds even better :)

I would also had that if you really care about key, that would be on a special project that require a different feeling, using a less used key or because sub bass is actually affected by the space your music is going to be listened to, or even the instrument in a song you use such as contrebasse, perhaps you would choose something that fit better your idea and for example a movie score ^^

Hi ! So I tend to not worry to much about this… As a data scientist and analyst, I often look at spotify data on different composer and look at some maps of compositions key, and honestly it doesn’t matter so much. Hans Zimmer uses 170 times the D minor scale (melodic or harmonic) and each songs still are listened on a daily basis on the full album or as singles… So worry more about the harmonies, chords progression and other nice stuffs such as rythms! And if you really worry about it, just try to write in 3-4 different keys, that would unlock some compositions skills and ideas ^^