"Echoes in Rain" has a 'buoyant optimism' due to the 'marching' rhythmic ostinatos and pizzicato strings.

The a cappella multi-vocal ending was compared to Enya's breakthrough single "Orinoco Flow".

The song includes a piano-based bridge, similar to Enya's piano solo work, and it is the first of her lead singles to do so.

On 13 December 2015, Enya gave a surprise performance of the song at the Universal Studios Japan Christmas Show.

The music video for "Echoes in Rain" was released on 20 November 2015, the same day as the accompanying album Dark Sky Island.