Hi @Andypineda27, thanks for writing!
We know that Spotify would like to make all the world's music available, but this availability can vary over time and between countries, depending on the permissions from rights holders.
On the other hand, new content is added to Spotify every day. If you can’t find something you’re looking for now, it may appear (or reappear) soon.
Meanwhile you can try to reach the artists through their social media channels!
Let me know if you have any other questions 🙂
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Note: I'm not a Spotify employee.