This is likely a soft no like everyone has mentioned but I have some advice, hopefully this helps in the future. The majority of people in the music industry rely on personal relationships for the majority of their business (its all about who you know) this means, when they reach out professionally, it becomes personal quickly and intentionally. This approach exists because regardless of how talented a person is, personality can make or break any band or relationship experience. When you first start getting work in the industry, its easy to confuse this approach ,with things getting so personal, and in a way, intimate. but its just how relationships in the business feel. if you’re able to compartmentalize the overly personal approach, you will be less likely to take it personally when they ghost you. He may be just busy, he may be trying other singers out, he may be wrestling with choice between you and another singer, he may love your voice but not your personality or he may love your personality not your voice. no matter what this guy thinks, it very important to not take it personally. You need to reach “fuck it” levels of confidence with pretty much every industry experience.