‘La Serotonina’ is a tango suite for violin and harp written for the ensemble BloomingDuo. The piece is made up of three movements, each dedicated to a performer. The second movement, ‘Vals for Susann,’ was composed first and was commissioned as part of the 2017 International Harp Competition. It is dedicated to renowned harpist Susann McDonald. The first movement, ‘Tango for Ji-Woon,’ is dedicated to violinist Ji-Woon Jung of BloomingDuo, and the third, ‘Milonga for Fan-Fen,’ is dedicated to Fen-Fen Tai, also from the duo. Each movement is based on a motto taken from the name of the dedicatee.