1. 

Justin's collaboration with Ariana Grande was called...

2. 

What is Justin's full name?

3. 

What was Justin's original YouTube channel username?

4. 

Where was Justin born?

5. 

What was Justin's debut album called?

6. 

When did Justin's documentary 'Never Say Never' first release?

7. 

Which pop singer has Justin NOT collaborated with?

8. 

What was Justin's debut single?