Rivers of Light might be seen as a companion piece to Northern Lights and, indeed, it revisits some of the same ideas. It has a similar folk-song opening—this time from the Sámi people of Scandinavia (the piece was commissioned by the Swedbank Choir in Riga, Swedbank being a Swedish bank with a big presence in Latvia). This is eventually combined with another Sámi folk song for a male voice over another of Ešenvalds’ ‘eternal’ chorales, and the words of the explorers Fridtjof Nansen and Charles Francis Hall also appear in a kaleidoscope of texts that facilitates a sustained but varied musical vision of light — specifically the Northern Lights — in its many forms.
— from notes by Gabriel Jackson © 2015