VIDEO: Liverpool, Dortmund fans sing 'You'll Never Walk Alone'

A close affiliation and respect appears to be forming between Borussia Dortmund and Liverpool, and not just because of the shared admiration for Reds' boss Jurgen Klopp.

The Bundesliga and Premier League clubs share the same anthem - "You'll Never Walk Alone," originally written for the Rodgers and Hammerstein musical "Carousel" - and both sets of fans joined for a rousing rendition before Thursday's first-leg kickoff at the Westfalenstadion.

The two giants left in the Europa League are battling out for a spot in the semi-finals.