The problem of over-loud background music on TV programmes has come up many times before on AB. Lots of people have found that the problem can be eased by adjusting the sound settings on their TV sets. (Getting the sound right should be something that everyone who buys a TV does when they first use it but I'd be prepared to bet that over 90% of people simply leave the sound settings at their default levels).
Even my ultra-cheapo Polaroid TV from Asda offers 'Standard', 'Music' and 'Theater' (horrid US spelling) settings, along with 'User', which allows a viewer to configure the treble, bass and balance settings exactly as they want them to be. More expensive sets will probably offer even more options. So perhaps it's time to press that 'Menu' button?