Anfitrião: João Alves
Friday nights at Espaço Porta-Jazz keep the jazz tradition alive with a jam session open to all musicians, hosted by João Alves. Each night is preceded by a concert led by the jam session's host, and the audience gets a spontaneous, relaxed atmosphere.

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