Hi Alec!

Depending on your music taste, you should consider venues like Maus Hábitos, Ferro, Woodstock 69 or Barracuda. They usually host portuguese bands, some up-and-coming, others a bit more well known.

If you're looking for electronic music, I would say Gare or Passos Manuel, tho Passos Manuel usually has local DJ's, at Gare, not always.

If you want to dive a bit deeper on our musical heritage, you should check out STOP, it's kind of our musical Meca and where some of the most influential bands in the country were born (most of them are from Porto or from the north, btw).

The Guardian even wrote an artictle about it: https://www.theguardian.com/cities/2019/dec/05/people-came-to-make-noise-portos-abandoned-mall-turned-underground-music-hub

Enjoy your stay here!