Undeniable talent, iconic music and all-around showmanship. To be a successful headliner in the highly competitive entertainment landscape of the Las Vegas Strip, you must have at least one of these weapons in your arsenal. Or you could be like Boyz II Men, which has all three.

Now in their sixth year of performing one of the Strip’s most entertaining musical residencies at the Terry Fator Theatre at The Mirage, Nathan Morris, Wanya Morris and Shawn Stockman have honed their show into a well-balanced, finely tuned example of what this style of Vegas production should be. They honor their longtime fans with pristine performances of their biggest hits, from “End of the Road” to “I’ll Make Love to You,” but never fail to impress with extra energy and a few surprises along the way. No matter what you expect from one of the most talented and successful soul and R&B singing groups of all time, you’ll leave with a fresh impression and the same thoughts everyone has: “I didn’t know they could do that!”

Boyz II Men is still best known from its prolific period during the 1990s as a harmony-focused foursome. Bass Michael McCary left the group in 2003 due to health issues but the remaining Boyz didn’t slow down, releasing seven more studio albums including 2017’s Under the Streetlight that hearkened back to their a capella origins. In the Mirage show, they return to those elegant four-part harmonies with help from a familiar voice: Marc Nelson, formerly of the R&B group Az Yet, who helped start the original version of the group with childhood friend Nathan Morris while they attended the Philadelphia High School for the Creative and Performing Arts.

But that doo-wop-flavored section of the show is just one chapter in this well-composed story. The individually and collectively gifted vocalists cruise through Motown classics including “Just My Imagination” and “The Tracks of My Tears”—complete with Temptations-style choreography—and a few rock and roll favorites like “Are You Gonna Go My Way” and “Come Together.” There are the classic Boyz II Men cover songs, including The Beatles’ “Yesterday” and the song they originally passed on that went on to become one of the biggest pop crossover hits of its era, Lonestar’s “Amazed.”

Of course, the crowd in the comfortable Mirage venue is never happier than when those mega-hits come out, from the romantic harmonies and soaring vocal runs of “On Bended Knee” to the singalong-inducing “End of the Road” and high-energy “Motownphilly.” These are singers who have kept their unequaled instruments in peak condition and they are just doing what they do, which is simply being great entertainers in Las Vegas.

The Mirage, 7:30 p.m. Jan. 25-27, starting at $49.99 plus tax and fee. 702.792.7777