There are several bands with this name: 1. a heavy/hard rock band from Visalia, CA, 2. an instrumental band from Derby, UK, 3. a post-hardcore band from York, UK.
These are photos from concerts where Slow Season played, so they may be of other bands that played the concert as well.
Ecstatic Vision / Here Lies Man / Slow Season May 23, 2018 Visalia, California, United States Uploaded by Stephenhuerta
Monarch / Color / Slow Season Jan 5, 2018 Visalia, California, United States Uploaded by Stephenhuerta