The singer has been hotly pursued since “act ii: date @ 8” went viral late last year.
Lynne is working with Fairchild and singer-songwriter Ashley Monroe on a forthcoming studio album.
Other artist deals this week: A. Blomqvist, The Wilder Blue, Bonny Light Horseman and more.
The management firm also handles Russell Dickerson, Luke Grimes and Dylan Gossett, among others.
Kailyn Finnegan will serve as Young's manager at the firm.
Other ink this week: Crowded House, Wyatt Ellis, Morgan Jay and more.
The signing announcement underscores the award-winning artist’s "commitment to expanding her artistic reach and exploring new creative avenues."
The singer has been with the Gordon Kerr-led company since 2013.
The artist parted with her former longtime firm, Vector Management, in December.
Best known for his association with George Strait, Dillon has also written songs for artists including George Jones, Toby Keith and Kenny Chesney.