No idea if it is available in the US yet but if it comes to your area I recommend watching it, at least once. In the meantime, enjoy the theme song.
It's written by Samuel Sim. The artists are vocalists Heather Cairncross, Ioanna Forbes L'Estrange, Rachel Weston and Grace Davidson. Chris Richards (clarinet), Ileana Ruhemann (flute) and Caroline Dale (cello).
This music has grabbed me almost as much as the TV show.