# File lib/omniauth/strategies/last_fm.rb, line 40
      def request_phase
        params = { :api_key => api_key, :cb => options[:cb] }
        query_string = params.collect{ |key,value| "#{key}=#{Rack::Utils.escape(value)}" }.join('&')
        redirect "http://www.last.fm/api/auth/?#{query_string}"
      end