Many things can evoke a memory. Like a smell. Or a touch. When Mamek Khadem wanted to evoke the memory of her native Iran during the Islamic revolution in 1979, she did it with music. Her project began when a friend in Tehran needed a soundtrack for an art installation commemorating the anniversary of the revolution. The exhibition included a photo of a baby in a bassinet with the hand of a mother rocking it. Khadem immediately thought of lullabies. And then of songs of the revolution. Songs from the Left and the Right that were sung in the streets during the revolution. So she combined them with traditional lullaby tunes. Here’s Mamek Khadem talking with Anne Strainchamps about “Goodnight Songs of the Revolution.”