An elderly widow, restricted in her activities, was eager to serve Christ. After praying about this, she realized that she could bring blessing to others by playing the piano. The next day she placed this small ad in the Oakland Tribune: “Pianist will play hymns by phone daily for those who are sick and despondent--the service is free.” The notice included the number to dial. When people called, she would ask, “What hymn would you like to hear?” Within a few months her playing had brought cheer to several hundred people. Many of them freely poured out their hearts to her, and she was able to help and encourage them.
From bible.org