Meghan Trainor's 'Thank You' is aggressively pro-Meghan Trainor

Chances are, you already have a strong opinion about Meghan Trainor, and her new album will not change your mind.

Thank You is a love letter to ... Meghan Trainor -- a triumphant declaration of skyrocketing self-esteem. "Who's that sexy thang I see over there?" Trainor demands. "That's me, standin' in the mirror." 

If you're one of the haters she's rallying against, you will, as Taylor Swift once predicted, hate, hate, hate this album. But as Trainor will warn you, she's "on the no-hater diet."

"All About that Bass" was one of the most polarizing and wildly successful singles in recent memory. Since then, Trainor has proved that she's not just a one-hit wonder -- she picked up the Grammy for Best New Artist earlier this year, and her video for "No" is pushing 165 million views on YouTube.

She's ditched the blonde to reemerge as a fiery redhead, so you know she's ready to mix things up. That's just pop star code. 

On Thank You, Trainor settling into the mainstream by looking beyond her swinging debut and diversifying her sound, creating modern pop songs with doo-wop flourishes instead of keeping it full retro.

She experiments with slicker electronica elements and tries her best Dolly Parton on the lovesick "Hopeless Romantic" -- one of the few indicators that her life isn't practically perfect in every way.

It's a solid pop record, though it might benefit from a narrower musical focus. It's clear that Trainor is figuring out how to use her muscles on the edge of megastardom. Trainor doesn't achieve the genre-defying brilliance of Anti or Lemonade -- nor does she brush against their emotional impact. 

Nothing is quite catchy enough to stay firmly lodged in your brain, for better or worse, the way "All About That Bass" does.

In that sense, the album is a perfect canvas for Trainor's personality, and she's only getting sassier and more confident. 

She wants you to know it's a great time to be  Meghan Trainor. In "Champagne Problems," she airs her very short list of grievances, "My iPhone always seems to die right before I hit reply."

While it can be comforting to hear someone rich and famous admit that being rich and famous is pretty great instead of whining, her unflinching bravado isn't a particularly complex narrative. 

Her lead single, "No," has already drawn mid-2000s Britney Spears comparisons, even mashed up with "Overprotected," and the video has serious "Stronger" vibes. But Britney is a textbook example of the corrosive side of fame. Confidence is great thing, but it's even more powerful to see it thrive despite cracks in the armor. Trainor's take on self-love just feels surface-level. 

"Better" tackles disappointment, but only in the past tense. And we certainly don't need all art to broadcast suffering, but being just a little relatable can go a long way.

"If I was you, I'd wanna be me too," Trainor repeats over and over again. And hey, preaching to the choir isn't a terrible strategy when things are already going your way.

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