Harp effects in action

Ever wonder why your teacher insisted you learn things like harmonics, tremolo, trills, près de la table, and all those other harpy effects? This arrangement is a good example. And yes, all the effects she uses are also perfectly doable on lever harp.

The piece is Sweet Blues by Bernard Andres, performed by Ruth Boyajian during a Focus on Youth concert at the 11th World Harp Congress in Vancouver.