In a 2008 clip on his YouTube channel, Justin Bieber sings what Usher No. 1 Hot 100 hit to the man himself? *

Let’s keep it with Usher. He and Biebs have collaborated on three Hot 100 hits. Which came first? *

In 2010, Lionel Richie picked Bieber to sing the opening part on a remake of “We Are the World” for victims of the Haiti earthquake. Where did “We Are the World 25: For Haiti” peak on the Hot 100? *

True or False: Justin Bieber has more No. 2 Hot 100 debuts than any other artist. *

What song became Justin Bieber's first No. 1 hit on the Hot 100? *

The year-end No. 1 Hot 100 hit of 2016, "Love Yourself," counts which other superstar as a co-writer? *

Of course, we gotta hit "Despacito." The Bieber-driven remix of Luis Fonsi and Daddy Yankee’s single helped the smash land how many weeks atop the Hot 100? *

Onto the albums side! Justin Bieber has seven No. 1s on the Billboard 200. Which has held the top spot longest? *

Bieber's latest No. 1, 'Changes,' came just before his 26th birthday, breaking whose record for the fastest to seven Billboard 200 chart-toppers by that age? *