Dolly Parton – $500 million
You must have been living underneath a rock if you don’t know who Dolly Parton is! The “Jolene” singer has actually written more than 3,000 songs. One of them would be the modern classic, “I Will Always Love You.” When asked about songwriting, she once said that she started doing it at the tender age of seven. She has said that she tries to write a little every single day. If you look at her songs, you will see that they have been influenced by the childhood that she spent in the Appalachian Mountains.