Chilling moment savage pub-goer kills man with single punch for insulting his girlfriend’s ‘off-key’ karaoke performance

THIS is the chilling moment a pub-goer killed a man who complained about his girlfriend’s karaoke singing with a single punch.

Christopher Cooper could be seen following Kelvin Evans, 64, outside The Station Hotel boozer in Swansea.

PAChristopher Cooper floored Kelvin Evans with one punch[/caption] Kelvin died a month later in hospitalPA PACooper has been jailed for life for murder[/caption]

The 39-year-old felt “slighted” after believing Kelvin had complained about...