Theodoridou has said in interviews that she enjoys singing the work of Jacques Brel, Kurt Weill, Manos Hadjidakis, Mikis Theodorakis and Édith Piaf as much as she enjoys opera. In 2010 she and her husband (conductor Theodore Orfanidis) created "Orchestra Mobile", an orchestra composed of renowned European musicians who can play in every city literally at once. In April 2011, she organised and performed a charity concert with Orchestra Mobile at Parnassos Concert Hall in Athens to support victims of the 2011 Japanese earthquake.