One comes through my neighborhood every day (maybe not on Sundays? not sure) but saying it "plays melody music" is a stretch. Makes off key noises usually recognizable as a well known Christmas carol would be accurate though.

Quick points:

The law in Oklahoma is similar to laws just about everywhere...if you are committing a felony and someone dies you can usually expect to be charged with murder.

No, things like this don't "happen every day." The odds in favor of nothing like this EVER happening to you or your home remain almost certain.

It seems highly unlikely that three armed young men dressed like ninjas were there to commit a burglary. Which suggests that the young man who "just happened" to be in the kitchen at the time carrying a rifle might have a pretty good idea what they were actually there for. If I were investigating this case I would take his claim that he didn't know them with an entire shaker of salt. This is important because it is vital to stay grounded in reality, and the reality is that things like this happening to YOU, just out of the blue, is not something worth fretting about.