Miley Cyrus and Alicia Keys on the voice

The newest additions to the spinning chairs waste no time making themselves at home. It's clear from the start that Cyrus and Keys are on a quest to build the strongest teams they can -- even if it means they go toe-to-toe with veteran coaches Adam Levine and Blake Shelton.

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In the sneak peek, each of the new coaches take different approaches to wooing potential team members, and at times, Levine and Shelton find it hard to compete.

Cyrus plays up her off-beat, youthful energy. At one point, she tells a contestant who wore her grandmother's vintage vest to the audition that they share "grandma power."

Keys, meanwhile, goes for a warm, personal approach that none of the other three could possibly duplicate.

Keys might be the one to beat

Speaking of Keys, early indicators are she's going to be the most calculated and deliberate coach during auditions this season. She doesn't seem like the type who will be turning chair around for just any good singer.

Her strategy appears to be seeking out singers who she feels a connection to. One person who ends up on her team calls Keys "honest and real," and that sums up what Keys' approach to mentoring will probably be as well.

As an artist that puts a lot of stock in authenticity, Keys seems to be on the lookout for artists with strong points of view that she can take to a new level.

In other words, the other coaches should be on high alert for this savvy coach.

Levine and Shelton have fun picking on Cyrus -- but she fights back

Even though the bromance of Levine and Shelton is out in full force once again this season, Cyrus' addition promises to only add more fuel to the fire.

Like when she guested as a mentor on the show last season, Shelton has a lot of fun poking fun at the younger singer's eccentric style and her gift for gabbing. ("When do you breathe?" he joked at one point.) But she doesn't take it lying down.

At one point, Cyrus pointed out to a contestant that unlike her fellow coaches, the "internet actually existed" when she was coming up in the music world. (Levine laughed the comment off, saying, "We weren't born in the '30s.")

Most importantly, there's perfect harmony

New dynamics are tough to test out, but the first look at the new season feels less like a timid step into the future and more like a leap into a new era for "The Voice."

Cyrus and Keys make sure their musicianship shines brighter than everything else. (They even do an impromptu duet with a contestant and have a fun performance with Shelton and Levine.) And that could make for a pretty harmonious season.

Season 11 of "The Voice" premieres September 19.