NBS uses a variety of data gathering processes to determine these metrics, but they synthesize everything into handy charts and models so you can better understand your fanbase in real time. This includes data from your Facebook, Instagram, and Twitter pages, YouTube/Vevo views and activity, Pandora spins and references, and more.
Another option for struggling songwriters is a private advance company. These companies offer advances to songwriters who have a threshold amount of annual royalty income with the promise of returning their rights when the advance is repaid. However, this type of loan typically comes with high interest rates and stiff penalties for non-payment. This can lead to many financial problems in the future and saddle the songwriter with debt for many years.