Nine year old singing opera!
Immune to music or off Key?
It is said that music is a universal language, but some people just don't derive pleasure from listening to a tune. However, that doesn't mean they are tone deaf or philistines, they are Biologically desensitised to the emotional effects of music.
A study published in the journal Current Biology, looked at the neural basis of music and how notes translate into emotions. It found that 5% of test participants had musical anhedonia - an inability to experience pleasure from music, these people were otherwise healthy and happy, but simply do not enjoy music and showed no automatic responses to its sound, despite normal musical perception capacities.