Billboard cover star Meghan Trainor has had an amazing last few years, with four Hot 100 singles and a Billboard 200-topping debut album. But the girl who seemingly came from nowhere and burst on the scene in a pastel flash was a ukelele-toting songwriter for big acts in the industry, from Fifth Harmony to Rascal Flatts, and judging by her recent work for Jennifer Lopez, she doesn’t plan on dropping her first gig. Here are six songs you may not realize the pop star had a hand in crafting.

1. “Sledgehammer” by Fifth Harmony

2. “Ain’t Your Mama” by Jennifer Lopez

3. “Road Less Traveled” by Lauren Alaina

4. “I Like the Sound of That” by Rascal Flatts

5. “Painkiller” by Jason Derulo

6. “Can’t Blame a Girl for Trying” by Sabrina Carpenter

source: billboard