 Complete the following phrase:  In 2015, LaPolt helped found songwriter advocacy group the Songwriters of North America SONA with songwriters Michelle Lewis and Kay Hanley. SONA has grown to now include over 600 songwriters including Kara DioGuardi, Siedah Garrett, Justin Tranter, Mozella, Busbee, Priscilla Renea, Diane Warren, Claudia Brant, Steven Tyler, Joe Perry, Rick Nowels, Darrell Brown, Dave Bassett, and 21 Savage. LaPolt also serves as an attorney advisor to the GRAMMY Creators Alliance, announced during the 