John Prine wrote Hello in There in 1971.    It is a song about aging, loneliness, and isolation:

“So if you’re walking down the street sometime and you spot some hollow ancient eyes, please don’t just pass them by and stare, as if you didn’t care. Say ‘Hello in there,’”

The song is full of heart-felt empathy and poignancy and has been reinterpreted a number of times to become one of our culture’s best songs.    John Prine wrote many songs, but this one resonates very strongly with listeners.