Since 2013, Siobhan has been a member of the ensemble at the Deutsche Oper Berlin, where her stage roles have included Pamina in Die Zauberflöte, Musetta in La Bohème, and Waldvogel and Woglinde in The Ring Cycle, conducted by Sir Simon Rattle. She has also frequently been a guest at many other opera houses, including London’s Royal Opera House, the Dutch National Opera, Munich’s Bavarian State Opera and the Lyric Opera of Chicago.
On the concert platform, Siobhan has appeared as a soloist at events the likes of the Salzburg Mozartwoche and the BBC Proms, as well as with prestigious ensembles the calibre of the Berlin Philharmonic Orchestra and the Melbourne Symphony Orchestra.