Ace Of 'Bass': Meghan Trainor's Rise To The Top

LOS ANGELES (CBSLA.com) — Meghan Trainor's "All About That Bass" pairs a throwback sound with lyrics that pack a powerful message.

Her lyrics are empowering young girls to love their body: "Yeah, it's pretty clear, I ain't no size two. But I can shake it, shake it, like I'm supposed to do."

She goes on to sing:

"I see the magazines working that Photoshop.
We know that shit ain't real.
Come on now, make it stop.
If you got beauty beauty just raise 'em up,
'Cause every inch of you is perfect
From the bottom to the top."

"She tapped into the surface of how girls sometimes don't feel comfortable in their own bodies. And she's like, 'Hey, I am no size two. I am a normal girl. We are all normal girls. And the country is made up of a lot of normal girls," according to AMP Radio's afternoon radio host Chris Booker.

He's been following Trainor's rise on the charts: It's a testament to if you work hard, you make something good, you stand by it, it can work for you. And I think a lot of people like that story."

Hard work truly paid off for Trainor.

Her success comes as no surprise to her former classmates at her hometown in Nantucket.

"Just to see her performing with the high school jazz band, with the choruses, and she was just one of us. And now, she has just taken off and that was really cool," her friend Eliza said.

Trainor took to music early. She sand in the chorus of her high school jazz band and, by the age of 17, had already put out three albums.

CBS2 spoke with Tom Faris, who leads the jazz band at Nauset High School, where Trainor graduated in 2012.

"She picked up the ukulele and played the guitar throughout high school. She did all of the lead tracks, and the back tracks, the drum tracks, and the background vocals - the whole thing. She produced the song from beginning to end," Faris said. "She was the singer in our jazz band, one of the singers. She had this ability to make the song evolve and make it her own, which is something that I really admired in her."

Trainor's fellow chorus member Emily said: "I played the bass in jazz band, but I also kind of sang. And, actually, Meghan kind of pushed me to sing more. so I would sing with her and that was really fun."

She added, "It's pretty cool to say I was friends with her and I sang with her."

Not surprisingly, Trainor was voted the student in her class "Most Likely to Leave a Legacy."

And what a legacy: Her album "Title" went straight to number one on the Billboard music charts. And her follow-up "Lips Are Moving," has already secured itself in the top 10.

Booker speculated: "When you have a song that is so big like 'All About That Bass,' it is such a huge song, her follow-up 'Lips Are Moving,' it's on its way to number one, too. But when you are talking about a song that was already at the very tippy-top of the mountain, and this one comes in about here [points lower] - people are like, 'It's a one-hit wonder.' No, she is just getting started."