To clarify, you have a Artist model and controller and want a show.html.erb file? Something like this should work. In your routes file, add a line that refines which actions you want artists to have:
resources :artists, only: [:show] #and any other actions you want inside the brackets
In your artists controller:
# GET /artists/1
# GET /artists/1.json
def show
#whatever info needs to be shared with the view
@artist = Artist.find(params[:id])
end
Then create a file inside app/views/artists and call it show.html.erb