"Leave (Get Out)" was the lead single from JoJo's debut album, JoJo. The song was released in February of 2004.

It soon became an international hit and peaked at #12 on the Billboard Hot 100.

According to Wikipedia:

When the single reached number one on Billboard‍ 's Pop Songs chart, JoJo became, at age 13, the youngest solo artist to have a number-one single in the United States.

The music video was everywhere including MTV, VH1, Disney Channel, and Nickelodeon.

JoJo's music video also set some records because of her young age. On her Wikipedia page it states:

The video was nominated for Best New Artist at the 2004 MTV Video Music Awards, which made JoJo become the youngest MTV Video Music Award nominee. The video also retired on MTV's Total Request Live after spending 50 days on the countdown, including two days at #1, making her the youngest artist to both have a video retired and reach the summit of the chart.

After some legal woes with record labels and such, JoJo recently released a tringle (that's three singles at once).

She's prepping for a comeback.

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