Fans and players were in tears as Liverpool dumped Lionel Messi and Barcelona out of the Champions League.
They will now face Tottenham or Ajax after doubles from Divock Origi and Georginio Wijnaldum.
Allez, Allez, Allez rang out as the emotional Liverpool supporters responded to what will go down as their greatest night at Anfield in recent years.
Liverpool faced an incredible task coming into the evening after losing 3-0 at the Nou Camp last week but turned the game on its head inside the opening seven minutes through Origi.
And then the second half exploded with half time substitute Wijnaldum scoring twice in 11 minutes to level the tie before Origi grabbed a stunning winner.
The crowd bellowed then famous song with Kenny Dalglish and co looking emotional in the stands.
Jurgen Klopp could hardly talk and his players were visibly moved by the reaction with James Milner crying on the pitch.