JoJo's full concert for 'VocalizeU'...

JoJo performed a vocally charged 30-minute set for 'VocalizeU' recently. For the past 10 years, she has been serving some serious vocal acrobatics.
Only thing missing is those hits. JoJo (under circumstances beyond her control) took too long to come back and now Ariana Grande has stepped into those shoes.

Not to say they can't have friendly rivalry. However, it's just harder to come back after being gone so long only to find that all the new kids on the block have all the power now.