PM Gordon Brown yesterday backed a young Cardiff businessman who uses rap music to teach GCSE courses. Nathan Dicks, 25, runs Re-Wise Learning, a company that sets parts of the exam syllabus to music to help teenagers learn. Pilot schemes are already up and running in 19 schools around Wales, and Mr Dicks appealed to the PM for help during a question-and-answer session at the Millennium Stadium, hosted by Red Dragon radio.