I recorded a couple verses for songs and my producer said he couldn't mix and master them because of the tone, and at points volume is inconsistent. I was under the impression that nobody is perfect, and those inconsistencies would be corrected in the mixing and mastering stage, but he insists it must be fixed in the recording phase. Don't get me wrong, i made sure I was fully prepared for the recordings. I wouldn't be surprised, but I still believe that it can be fixed in the mixing and mastering stage. I question his information because he only has mixing and mastering experience with an instrumental, and no experience with vocals. So my question: do typical raw rap recordings have tonal and volume inconsistencies that are fixed in the mixing and mastering stage? Or are raw rap recordings required to be near perfect in that regard? What should me and my producer expect in a raw rap recordings before any mixing and mastering?