Photo post / audio analogy - de-yellow night shot

[aadm (Alessandro Amato del Monte (aadm))]

Some time ago I asked for help how to adjust the ugly colors in a photo shot in very tricky artificial lights; I received lots of replies and many explanations that could probably help you:

singers indoor, high iso: how to remove nasty blue

The challenge here is to remove that nasty blue color band that borders the back of the performers (as well as the entire left side of the frame). I don’t know which module to use (I have tried color balance) and most importantly, how to build an appropriate parametric mask. I have used here Darktable 3.2.1 [20191201_NIK1145] License: Creative Commons, By-Attribution, Share-Alike. 20191201_NIK1145.nef (46.9 MB) 20191201_NIK1145.nef.xmp (23.6 KB)