Break into a closed tunnel and watch your favorite Band very closely!?!
Guerrilla gigs, surprise shows or DIY touring are different terms but mean the same. There is no barrier between fan and performer.
To watch those secret gigs in London, you have to book here: https://www.musicglue.com/playdates/
The venue will be emailed the day before the show. So watch out if you visit London! ;-)
Brand new out of their EP‘Flush’