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Just keep practicing, I think everyone can learn to sing 😊

I play my instrument by ear I don't know music theory. By the fact I hear all my wrong notes that I sing and I know that this cape for me can never be passed

I don't know any music theory either, it helps but I don't think it's necessary to play music. My best advice is record yourself, listen back, cringe and use that info to see what you need to improve 🫠