por Ópera Isto
Discover O Barbeiro de Einstein by Ópera Isto: in Herr Fritz’s barbershop, music is part of the daily rituals. Albert Einstein arrives with his violin, and words, sounds and melodies help him solve his great question.

Image: from the event entry at Agenda Porto.
Source: Agenda Porto (Câmara Municipal do Porto). Details can change; the original entry is the reference.