Vocal coach Kuk Harrell explained to MTV News that the 'Mistletoe' singer's next studio LP will allow fans time to acclimatise to his new, deeper voice.
"The only conversation we've had about Justin's album that we're about to do is it's really important that it's the proper transition because we've seen him [with] 'Baby', now we're watching him grow up," Harrell said.
"And we can't just throw him into the adult game right away. It has to be the proper transition. There's a record in between."
Harrell also said that he supports Bieber's decision to release a Christmas album, which he believes aided in getting the 17-year-old's more grown-up approach to music out there.
"That's why I think this Christmas album was really important because it gave everybody the opportunity to hear him, see him and get used to his voice changing," Harrell said.
"That was a huge thing going into this album. We were able to get a running start on where he's at vocally 'cause it's a natural thing. When his proper album comes out, everybody's going to really be looking at that."
It was recently reported that Bieber's next album will hit stores in summer 2012.
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