In 1976 his much anticipated collaboration with Mikis Theodorakis took place in the recording of "Tis Exorias" (Songs of Exile), and in 1978 the composer included Vassilis in the singers who took part in his international tour of Europe, the Americas and Australia. At home Papakonstantinou actively took part in youth and worker movement rallies, singing at strikes, meetings, anti-racist and anti-fascist concerts.
Papakonstantinou's highly-anticipated collaboration with Mikis Theodorakis occurred in 1976 for the recording of "Tis Exorias" (Songs of Exile), and two years later he was invited to join the composer on his European, American, and Australian tour. In his homeland, Papakonstantinou actively participated in rallies and events supporting youth and workers, singing at protests, gatherings, and anti-discrimination performances.