Sources: https://www.nab.org/documents/resources/061008_dertouzos_ptax.pdf

http://www.radiomatters.org/index.php/2018/02/05/radios-influence-on-music/

https://www.thebalancecareers.com/music-industry-101-radio-basics-2460320

https://medium.com/@radiodepartment/3-benefits-of-radio-for-music-artists-aa8a31901142