Muse will be in charge of Nashville's forward group and will also oversee the penalty kill, while McCarthy will work with the defensive corps and the power play.
It was just two months ago that Muse was raising the United States Hockey League's Clark Cup into the atmosphere as head coach of the Chicago Steel. Now, he'll be vying for the sport's ultimate prize.
"Getting an opportunity like this, it doesn't get much more exciting," Muse said. "It's the highest level of the game, the best league in the world, the best players alongside the best coaches and management, and so for me, I'm just absolutely thrilled and really excited to get started."
That process starts now as Muse prepares for a move with his family - wife Maureen, daughters Fiona and Niamh, plus son Kieran - to Music City to begin what he hopes will be the most rewarding step yet in a coaching career that has already delivered a slew of accolades.
Muse played his collegiate puck at Stonehill College, stepping right into the coaching ranks upon completion of his degree, beginning at Milton Academy, followed by stops at Williams College and Sacred Heart University. Then, Yale came calling.
Muse spent six seasons with the Bulldogs at Yale University, four of them as an assistant coach and two as associate head coach behind Yale Head Coach Keith Allain. Muse credits Allain with having the greatest impact on his professional career, and the numbers don't lie.
The NCAA National Championship with the Bulldogs in 2013 is the top highlight, but in 2014-15, Yale led the nation in team defense (1.64 goals-against average) and finished the season with the NCAA's top-rated penalty kill (90.1 percent). During his time with the Bulldogs, Muse helped guide the team to Ivy League regular-season titles in 2010, 2011, 2013 and 2015, as well as a pair of ECAC tournament titles and NCAA Tournament appearances in those four seasons.