LETTER F – Mouhamadou “Jammin'” Diob, 30, rides the Muni on his way to work in San Francisco, California, on June 4, 2013. Diob, an African drummer, moved with his wife from Senegal, West Africa, to San Francisco to persue his dream of becoming a professional musician. “It’s a lot of work to make it happen, but if you make it happen, it’s alright.”