I see a lot of advice given that isn't concrete.....try searching youtube on FL Studio mixing...learn how EQ works, research song structure, build your knowledge on music theory, learn the difference between mastering and mixing. I think you're question is more of "How do I get a CLEANER, CRISPER sound?" rather than 'How to build a beat' which I see many people apparently explaining. It's never the sounds you're using....literally any sound can be radio quality if you put the right mix to it. I can't imagine anyone disagreeing.
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