Our Friday feature LOST AND FOUND SOUND, a collaboration between NPR and independent producers The Kitchen Sisters, Davia Nelson and Nikki Silva, and Jay Allison continues. Today's story was drawn from our listener Quest for Sound telephone line. As Quest curator Allison tells us, listener Jonathan Mitchell called to tell us about a cassette that was sent to him by his grandfather when Jonathan was a child. He never knew his grandfather very well, and listening to the tape evokes some mixed feelings. Grandpa wanted to pass down his knowledge about playing the harmonica, but the young Jonathan didn't care. LOST AND FOUND SOUND is a year-long series which airs every Friday. The Quest for Sound line is 202-408-0300.