There is more than one artist known as 27.
These are photos from concerts where 27 played, so they may be of other bands that played the concert as well.
Cave In / Isis / Pelican / Old Man Gloom / Zozobra / 27 Oct 13, 2018 Los Angeles, California, United States Uploaded by Pathological Mastermind
Isis / DJ Speedranch / Johnny Truant / 27 Mar 11, 2003 Glasgow, Scotland, United Kingdom Uploaded by John Collins