Tim McGraw

 Tim McGraw performs during the 48th annual CMA Awards at the Bridgestone Arena on November 5, 2014 in Nashville, Tennessee. 

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Tim McGraw exited Red Light Management suddenly last week after five years with the firm, sources tell Billboard. During an interim period, McGraw is working with his former manager, Scott Siman.

McGraw has had a fruitful five years at Red Light, where he was managed by founder Coran Capshaw, with successful headline touring, radio hits, a residency at the Venetian in Las Vegas with his wife Faith Hill, several branding deals, the difficult extrication from his recording deal with Curb Records and a new deal at Big Machine. In addition to the management change -- the fourth in McGraw's career -- the singer also let go of his publicist, Green Room's Mary Hilliard Harrington.

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While the loss of McGraw as a client is not insignificant, Red Light remains the largest management company in Nashville, with four performances by artist clients at Wednesday night's CMA Awards, including the Band Perry, Lady Antebellum, Dierks Bentley and Entertainer of the Year winner Luke Bryan.

Neither Red Light nor Siman could be reached for comment.