This week, travel from Ethiopia to Morocco, South Africa to Tanzania, and beyond. Heather Maxwell welcomes the band Mokoomba to her office studio in Washington DC. They sing acapella versions of new and old songs, including some from their latest album "Tracings in the Sand," a celebration of Zimbabwe's tradition and culture. We also touch base in Nairobi with Bill Odidi, who speaks with artists Winyo and Edward Kamau about their collaboration "Running for Gold," a tribute to the Kenyan running team.