Lewin, formerly known as JARA, is sometimes referred to as Amsterdam's Joni Mitchell - she plays intelligent, idiosyncratic songs in open guitar tunings, with layered lyrics and melodies nestling unexpectedly in your head.

The Coo is an international folk duo, British Matt and Dutch Jara met by chance at an open mic and have since been writing songs together about love and life that they perform in two voices, with guitars and sometimes ukulele. Think:...