You may know Mandy Moore from her incredible acting as Rebecca on "This Is Us" on NBC.
But, did you know she was a pop star before becoming an award-winning actress?
Her 1999 album "So Real" was certified platinum, and her song "I Wanna Be With You" landed at number 24 on the Billboard Hot 100 chart.
"Candy" from 1999 also made the chart.
Mandy just released a new song, ironically titled "When I Wasn't Watching". Ironic, because we're getting ready to watch her on the fourth season premiere of "This Is Us" on NBC at 9 p.m. tonight.
First, watch Mandy here with her new tune, then below as a young hitmaker with her 2000 hit "I Wanna Be With You".