Do yourself a favour and steer clear.
MusicXray says it will deliver "diagnostics" (essentially, feedback from supposed "Music Industry Professionals") for your music. It charges for the service. Unfortunately, I have paid for two of my tracks to get "diagnostics". I have received no feedback whatsoever in respect of either. For one of the tracks, I have waited over 6 months and for the other, it is now approaching 2 months. "Support" tells me that MusicXray has no control over the people reviewing the music, but won't accept that even after 6 months of waiting, refunding my money would be the decent thing to do. I have noticed that many of the positive reviews on TrustPilot appear to be a "copy & paste" job, which suggests they are fake. Do yourself a favour and steer clear.