Today’s playlist celebrates the September 13 birthdays of Fiona Apple, MC5’s Fred “Sonic” Smith, Blood Sweat & Tears’ David Clayton-Thomas, Chicago’s Peter Cetera, Megadeth’s Dave Mustaine, The Church’s Steve Kilbey, Aterciopelados’ Andrea Echeverri, Was (Not Was)’s Don Was, Swizz Beats, and Hooverphonic’s Geike Arnaert; and the September 14 birthdays of a-ha’s Morten Harket, Amy Winehouse, Nas, Algiers’ Franklin James Fisher, The Marcels’ Cornelius Harp, Strawberry Alarm Clock’s Ed King, and Akinyele.