As a concert artist Kathryn has appeared with the Melbourne Symphony Orchestra, the West Australian Symphony Orchestra and the Sydney Symphony Orchestra. In the UK, concert performances have included The Messiah in Swansea, Handel's Belshazzar at the Dartington International Summer School and a tour of major UK concert venues performing Handel arias with the London Chamber Orchestra.
Kathryn has performed Handel's Dixit Dominus and Vivaldi's Magnificat in Bath Abbey and more recently was a soloist in the debut concert of The Australian Classical Era Orchestra, performing Mozart arias.
Kathryn McCusker is now resident in London.