pędzla Tonego Johansena
(from the brush of) ? This was suggested to me offline by a young Polish woman (and PF irregular) of exquisite, if somewhat sepulchral, artistic sensibilities who more than knows her way around a gallery.
(You know who you are :))
Obligatory Google quote:
obraz olejny pedzla czeslawa wasilewskiego , Warszawa, Sprzedam
The other suggestion I'd make is - less is more. You simply do not need to say 'by' - or its Polish equivalent - in the context of a hanging or exhibition. Any accompanying placard would be of the format
Tony Johansen (19xx - present)
The Six Hundred Year Song
... but the 'by' version might be for, say, the catalogue.
But we're losing sight of the main issue here: @Tony
, this work is just magical.