[citation needed] Galou has established herself internationally as a George Frideric Händel specialist, with parts such as Giulio Cesare, Rinaldo, Alessandro, Andronico (Tamerlano), Zenobia (Radamisto), and Bradamante (Alcina).
Upcoming plans include Il ritorno d'Ulisse in Patria (Penelope) by Monteverdi at the Theater an der Wien under the baton of Christophe Rousset, and Tamerlano (Andronico) at the Théâtre royal de la Monnaie in Brussels.
Galou has collaborated with orchestras such as the Balthasar-Neumann-Ensemble (Thomas Hengelbrock), I Barocchisti (Diego Fasolis), Accademia Bizantina (Ottavio Dantone), Collegium 1704 (Václav Luks), Venice Baroque Orchestra (Andrea Marcon), Il Complesso Barocco (Alan Curtis), Les Siècles (François-Xavier Roth), Les Arts Florissants (Jonathan Cohen), Le Concert des Nations (Jordi Savall), Ensemble Matheus (Jean-Christophe Spinosi) and Les Musiciens du Louvre Grenoble (Marc Minkowski).
As a concert soloist, Galou is, among others, a regular guest of the Beaune Baroque Festival, where she was acclaimed in Rinaldo and Alessandro by Händel, Semiramide by Nicola Porpora, and Juditha triumphans and Orlando furioso by Vivaldi.
[citation needed] A YouTube video featuring Galou's performance of "Erbarme dich, mein Gott" from Bach's Matthäuspassion had, as of August 2024, received more than 7 million views.