By now, you've no doubt toe-tapped your way thought Justin Bieber's new end-of-summer groove, "What Do You Mean?" (What do you mean you haven't yet? Alleviate that situation immediately.)

The song marks the Biebs' first official solo comeback to the scene since 2013's Journals, which got us thinking about his career to date. The Canadian crooner's had an incredible journey from a very early age, having first burst on the scene at just 15-years-old with 2009's "One Time" off of his My World EP, which shot into the Top 20 of the Billboard Hot 100. And ever since, he's never looked back, supplying hit and hit — from "Baby" to "Boyfriend" — while steadily accruing a massive, endlessly passionate fanbase known as the Beliebers.

With his new tropical House-infused tune, Justin's taking yet another sonic shift. But is it his best lead track of all? We're asking you to decide: Vote between My World's "One Time," My World 2.0's "Baby," My Worlds: The Collection's "Pray," Never Say Never: The Remixes' title track "Never Say Never (feat. Jaden Smith)," Under The Mistletoe's festive "Mistletoe," Believe's "Boyfriend," Journals' "Heartbreaker" or his upcoming album's lead track, "What Do You Mean?"

The choice is yours. Listen to all the songs below, and then make your pick — a winner will be crowned on Monday, September 7 at 5 PM ET.

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