An arsonist sang the lyrics to the song 'Disco Inferno' after torching his innocent neighbours' home while they were asleep in bed, a court heard.
On the night of the fire, Isaac Brooks, 42, yelled at the family: "You f***ing inbreds, I'm going to burn the lot of you."
He was overheard singing 'burn baby burn, disco inferno' - from the 1976 song by The Trammps - three days after the family, including two disabled adult sons, escaped the fire in Farnworth, Bolton.
Brooks, who set the blaze as part of a campaign of hate against his victims, has been jailed for 10 years for the arson attack and will have to serve another three years on licence.
CCTV footage emerged showing Brooks climbing over a fence behind the house before dumping a petrol-like liquid through a tumble dryer vent.
He set it alight before fleeing the scene as the blaze spread inside the kitchen.
The family were woken up by a loud bang, which they thought was someone breaking into the house in the early hours of February 11.
The dad discovered the blaze when he went downstairs to investigate.
He dragged his sons, who have learning difficulties, out of the house before going back in to rescue his wife and dog, Bolton Crown Court was told.
The mum had taken sleeping pills before bed and was oblivious to the house being in flames, said Wayne Jackson, prosecuting.
Brooks looked on outside the home as firefighters extinguished the blaze.
The mum shouted at him to go away as she sat in a neighbour's car.
It was initially thought that a faulty tumble dryer had sparked the fire, but the family became suspicious three days later when they noticed their CCTV system's wires had been cut.
Footage from a neighbour's camera showed Brooks torching the house, causing £30,000 in damage and forcing the family to move out for three months until repairs were finished.
When he became a suspect police searched his house and found plastic bottles filled with lawnmower fuel.
Brooks had known the couple for about seven years and would regularly shout abusive comments at the two sons.
Kevin Liston, defending, said the deliberately-set fire was "out of character" and borne out of substance abuse.
After a three-day trial in August, jurors found Brooks guilty of arson with intent to endanger life and criminal damage.
Brooks had 37 convictions for more than 80 offences, the court heard.
He appeared before Judge Martin Walsh via video link on Friday morning.
Calling it a "pre-meditated attack", Judge Walsh told him: "It is by sheer good fortune that no one was killed."
Speaking after the case, the mother told a reporter: "It should have been life. We could've been killed.
"[Brooks] was getting a kick out of it. That's why he came out and walked up to the car when we were outside."
