Jurgen Klopp had demanded that the redeveloped stadium was “filled with life” and the club's players and supporters duly answered the manager's clarion call on a night to cherish.
The outstanding Roberto Firmino struck twice, Sadio Mane capped a dazzling home debut with a goal and Adam Lallana bagged a beauty in front of the Kop.
Liverpool could and should have had more as they looked gloriously potent as an attacking force.
Makeshift centre-back Lucas Leiva breathed a sigh of relief as his first-half blunder – punished by Jamie Vardy – was relegated to a footnote as the Reds ran riot against Claudio Ranieri's side.