It was the 33rd minute and drinks were being taken. Leicester City's players were trying to their senses and Liverpool's were catching their breath when the noise started.
What started out as a song became a clapping, seat-rattling, foot stamping din, a sound that was unique; Jurgen Klopp had asked Liverpool's fans to turn the new Anfield, with its giant £115million Main Stand, into a fortress and this was them showing what it has the potential to become.
Supporters, however, can only do so much and they were merely responding to what they were seeing. Liverpool will certainly achieve Klopp's ambition of making Anfield a place that visitors will dread if they maintain the breathless tempo that enabled them to rip Leicester apart.