When the elephant keepers at the Smithsonian's National Zoo hear the sound of a harmonica, it's not the radio they've left on. Instead, it's the Zoo's 36-year-old Asian elephant, Shanthi, who, unsolicited, has a propensity for coming up with her own ditties using whatever instruments the keepers have provided. These include harmonicas, horns and other noisemakers. The Zoo has captured some of Shanthi's most recent capriccios on this video.
