Celine Dion shares career advice from late husband Rene Angelil in 'The Voice' battle rounds preview

Celine Dion is coming to The Voiceas a mentor for Team Gwen, and the enthusiastic Voice hopefuls can't contain their excitement.

While Wednesday's episode recapped what went down during the last three weeks of blind auditions, fans were also treated to a sneak peek at the upcoming battle rounds.

For those on Gwen Stefani's team, that means working with the five-time GRAMMY-winning "My Heart Will Go On" singer, who clearly has a wealth of knowledge to share about both stage presence and vocal control.

WATCH: Celine Dion Joins Team Gwen Stefani as a 'Voice' Battle Round Advisor

One piece of advice Dion shared in the sneak peek came from her late husband, Rene Angelil, who also served as the songstress' talent manager for over three decades.

"My husband is always with me," Dion shared with Stefani and two contestants. "He said, 'You cannot be good all the time. You have to be good when it's time.'"

The time is coming soon for the excited contestants, as The Voice battle rounds kick off next week. Viewers will get to see just how much Dion -- as well as fellow mentors John Legend, DJ Khaled and Luke Bryan -- helped get them ready for the spotlight.

WATCH: Gwen Stefani Gushes Over Blake Shelton and 'Voice' Mentor Celine Dion

"What I like about The Voice is I get to be stunned by amazing talents," Dion shared in a solo interview. "This is the new generation."

Recently, Stefani opened up to Seth Meyers on Late Night about Dion's participation in the show, and how she's "the ultimate person that you would want to be on there."

"She is so unique.... Every song she puts out is a world song, she speaks to the world and that's a whole other level [than], 'Oh I made it as a pop star in America,'" the No Doubt frontwoman shared. "She's [been] massive since she was 13 years old, so having her on the show was incredible." Check out the video above to hear more.