Free concert on Praia da Rocha beach

[TomUK]

I was watching Benfica v Porto at weekend via the internet. It was live streaming of the Portuguese channel SIC. When the game finished, instead of the stream ending as usual, the next programme was shown. It was televised live from Praia da Rocha beach where a free open air music concert was taking place. There were crowds of people enjoying the show and everyone seemed to be having a great time.
Did any of you out there attend this? Do you know if any more are planned?
We are out there 4th September for a couple of weeks - wouldn't mind going if there are more planned.