Adjoining karaoke rooms led to an unwanted duet and a distinct lack of harmony on Monday in the capital’s Por Sen Chey district.

Police said two friends had booked themselves a room and began singing – and drinking – at noon.

All was well until the room next door was occupied and thin walls led to an unwanted singing competition.

Tempers finally boiled over when our songbirds had the temerity to sing the same song as their new neighbours, who took offense, started an argument and eventually assaulted them with fists and a belt.

No police complaint was filed as the two groups agreed to $150 compensation.

Nokorwat