The guessing is not always correct.
In addition to our "guessing" not always being correct I seem to recall reading that some ascending auditory pathways involved in speech recognition, which was given as guessing's context, are not always the exact same neurological connections involved in music perception. Since am on a tablet and not a keeper of digital files I have no ready reference to cite or expostulate about this difference right now, so pardon my non-specificity.
Last night I was listening to some of African trumpeter Hugh Masakela's recordings. Being myself born and reared in the United States obviously that for certain African influences I had no way to accurately "guess" correctly what some masked music passages would've been if it were played very loud.
So, if when we listen to very loud music and "guess" what we might have heard doesn't this mean music can not be a universal language? Or, is it actually true that vocalization and music share some, but not all, auditory pathways and that when played loud there are musical performances we have no memory basis for (ex: Rahsaan Roland Kirk or Hugh Masakela) and we suspend guessing?