It generally results in a large 'hurrumph' and loud closing of the living room door by DH - which frankly has been winding me up for months.
I'm no Leona Lewis but my singing voice is genuinely not that bad (one of our first dates was at a karaoke bar and it didn't bother him then!).
Seriously I actually feel his reaction is a bit rude and disrespectful. I can understand he wants to be able to hear the telly but it's the manner in which he does it that annoys me - opinions on a postcard please!