Barry Manilow gave us the song, "I WRITE THE SONGS THE WHOLE WORLD SINGS," a few years back.
It's sad to think how empty our lives would be were it not for song writers and songs. Lines from an old Negro refrain tell us: "Without a song, the day would never end. Without a song the row would never bend . . . without a song . . ."
Song writers an singers have a sort of symbiotic relationship: you scratch my back; I'll scratch yours. Unless the performers become superstars, most song writers usually make more money than singers do. Royalties.