“Sometimes I hear people in the crowd thinking, ‘Oh my God, I grew up with this person,’ or ‘my music teacher is here,'” Trainor told the Globe in a recent phone interview. “It’s just the best reunion.”

Before returning to the Bay State, Trainor talks about how her growing family has influenced her music, her new album and the tenth anniversary of her 2014 hit “All About That Bass.”

Why did now seem like the right time to go on tour again?

I hid for as long as I could, but I did it. I have to do things that scare me. I’m even more excited about this tour though because the last time I toured I was with this guy seven years ago and now he’s my husband and I have two kids so it’s going to be a little different. I think the hardest part is going to be making sure my kids have the best time and that they’re OK.

From marriage to motherhood: How have all these new experiences changed you as an artist in recent years?

When you have kids, your heart gets three times the size, and then it gets chopped up and put into these little people, and then they’re running around and you’re like, “This is my heart, be careful.” Life becomes more meaningful. It makes everything seem a lot more important because it is. I feel like when I woke up when I had the kids, I was like, “Oh no, everything is so precious.” My songs on this album, “Timeless,” the ballad called “Timeless,” is my big “I love life so much, I hope it never ends. I hope to be timeless forever, because that’s amazing.” And then I still have my, so as a mom, as a woman, as a human, I’m still learning to love myself, so I write all these upbeat anthems about self-love. I think that resonates well with every person out there who is just doing their best.

It was so much fun hearing T-Pain on the new album on the song “Been Like This.” What inspirations did you try to channel while working on the record?

When I got to tell T-Pain how much he inspired me and then played him some of those songs, he was like, “If you think I inspired you, that’s crazy.” And I was like, “No, I’m telling you, man, you taught me there’s no such thing as too many harmonies. My harmonies are part of the production, there’s no such thing as too many.” And then his catchy melodies, the way he can rhyme words that don’t rhyme. That’s what I put into my music, so inspired by him.

Also just inspired by, which sounds lame, but I listen to my first album a lot. I try to think about why those songs did so well and why they connected so much. I did an album before called ‘Takin’ It Back’, I go back to my roots, I do the doo-wop thing but I wanted to make it modern pop. With ‘Timeless’ I think I did that twice. I thought we’re going to be old school, you’re going to think it starts off like an Amy Winehouse song and then I’m going to take you to Jersey Shore and we’re going to hit the clubs.

You have written so many hits for yourself and others? What do you think is the key to a timeless song?

I think the most timeless songs are the catchiest ones that you never forget. I even noticed we used to play old school music for the kids at breakfast, and if there’s a really catchy song that you can sing along to right away, Riley will ask, “What is that song?” Like he wants to know more about it and loves it. In my music, I love it when, for example, the dad of one of my fans comes up to me and says, “You kept me up all night singing your songs.” And I’m like, “Yeah, that’s what I want! I want to stick in your brain. I want to be a treat for your ears. I want you to remember me. I think it’s so cool that people can play these songs years and years after I’m gone and reminisce. I think that’s what makes music so timeless and so cool.

What were the catchy, timeless songs that you always listened to as a child that drove your parents crazy?

It didn’t drive them crazy, they loved it too. They sang with us. We sang Natasha Bedingfield’s song ‘Unwritten’ like crazy. It’s crazy now because she’s opening for me on this tour, so it’s wild because I’m still her biggest fan. I remember the car rides with me, my brother and my mom, and we would sing ‘Girl you’re my angel, you’re my darling, angel,’ just the catchiest, coolest songs. When we would come home at night, we would always have dance parties to let out our energy, and my dad would play gospel or something like funk and soul. We had a lot of crazy old funk songs like ‘Cut the Cake.’ ‘Play that funky music white boy’ – we had all that. We had the best music ever.

In 2024 it will be 10 years since your hit “All About That Bass” was released. How do you look back on this song? Did you know you had a hit on your hands when you wrote it?

No, I didn’t even know it was a great song. I had so many songs back then from so many different genres and I liked others more than this one because this one was so raw and different that I also thought, “Nobody’s going to cut this, nobody’s going to hear this.” And then they mastered that version and Epic Records was like, “We’re putting this out as your single and you’re going to be the face.” I was like, “Really?” Even my family was like, “The one with the bass? That’s the song they picked?” When it hit, it took me a while to understand what it was. My brothers and I were like, “Ugh, that song.” And now, 10 years later, it’s my pride and joy. It’s my firstborn. It’s my baby. Everything I have, even my kids, is because of that song. I got my husband because of that song. Every day now we say, “Thank you, ‘All About That Bass,’ we love you.”

MEGHAN TRAINOR: THE TIMELESS TOUR

With Paul Russell and Chris Olsen

At Xfinity Center, Mansfield, September 20, livenation.com

You can reach Matt Juul at [email protected].