If your band hasn't decided how it will treat songwriter income, you'll need to work that out. Then the songwriters (and publisher) must sign up with ASCAP or BMI, register the songs, and wait by the mailbox (or bank, if you choose direct deposit). But unlike over-the-air radio frequency performances (AM and FM radio), a webcast or satellite radio station also pays a royalty fee to the artist. That payment is collected and paid by SoundExchange. (You should download the paperwork from their website and register as a featured artist.)
You can find out whether SoundExchange is holding money for you by checking the list of unregistered artists . If you don't see your band here, then Sound Exchange is not currently holding a check for you.