Sergio Aguero proved he is top of the pops as he crashed a hat-trick in front of Elton John at Watford.
Argentine super striker smashed in his sixth Premier League treble to take Manchester City's goal tally for the week up to 15.
Gabriel Jesus also found himself on the score sheet after he had been fed by Aguero.
Before Nicolas Otamendi headed in David Silva's cross and Raheem Sterling converted a penalty he had won.
WATFORD
Heurelho Gomes - 5
Three clean sheets in a row, then a deluge. And it rained heavily, too
Daryl Janmaat - 4
Brilliant far-post clearance under pressure followed by apocalpyse
Adrian Mariappa - 4
Simply unable to cope with City's mesmerising movement and slick passing
Christian Kabasele - 4
Overwhelmed by Aguero and Jesus, and he won't be last to suffer that fate
Jose Holebas - 5
Booked. Back among the yellow cards, chasing last season's personal best of 14
Abdoulaye Doucoure - 5
Booked. He never gives the ball away, goes the fans' song – but he did here
Nathaniel Chalobah - 5
Moments of class but a harsh, sobering lesson for England hopeful
Andre Carrillo - 5
Lost, if not anonymous, but unfair to judge him in such a one-sided contest
Tom Cleverley - 6
Never stopped running but the carnage around him took its toll
Richarlison - 5
Headed wide from Watford's best chance to make a game of it at 0-0
Andre Gray - 4
Willing runner, but few sights of goal and first touch often betrayed him
SUBS
Pereyra (Cleverley, 65) 5, Capoue (Chalobah, 70) 5, Deeney (Gray, 74) 5
MANCHESTER CITY
Ederson - 6
Do not disturb, forty winks in progress, wake if needed
Kyle Walker - 8
Key role in City's third goal, won a ball he had no right to win
John Stones - 8
Exuded calm authority, but rarely tested and bigger tests lie ahead
Nicolas Otamendi - 7
Move along, nothing to see here, no problems, no pressure
Benjamin Mendy - 7
Silk and steel in equal measure, looks the real deal
Fernandinho - 7
Took no prisoners but not many lags to round up this time
Kevin De Bruyne - 9
Wicked pace on set piece delivery and sublime weight of pass
David Silva - 7
Like a conductor calling the tune as City went through gears
Raheem Sterling - 7
By no means the star, by no means a passenger
Gabriel Jesus - 8
Far too nimble and streetwise for the floundering Janmaat
Sergio Aguero - 9
*MOTM First goal was offside, but he was unstoppable, unplayable
SUBS
B.Silva (Jesus, 65) 6, Gundogan (De Bruyne, 67) 6, Sane (D.Silva, 78) 6