Teen star Shawn Mendes brings 'hunky, guitar-strumming sensitivity' to Xcel Energy Center

As with most teenagers, Shawn Mendes' life seems to change every few months. His life just happens to be in a very bright spotlight. First, he was the new Justin Bieber. Then the anti-Bieber. Then the new Ed Sheeran. And now simply Shawn Mendes, pop star.

After learning to play guitar at age 13, putting clips on Vine months later, signing a record deal at 15 and landing two No. 1 albums by 18, Mendes is a full-fledged celebrity. He'll headline Sunday at Xcel Energy Center in St. Paul.

He's 6-foot-2 with wavy chocolate hair and a way with words that appeals to tween and teen girls. That could explain his social media followings: 23.6 million on Instagram and 11.5 million on Twitter.

"When I was a freshman in high school, a couple of friends were talking about him and I went and saw him on YouTube and I've been admiring him ever since," said Zoe Weinmann, 18, of St. Louis Park, who will witness Mendes in concert for the first time on Sunday. "He seems like a sweet person, a genuinely nice person you'd want to hang out with."

Established stars have taken notice. Mendes counts John Mayer and Taylor Swift as friends. He previewed songs intended for his second album for Mayer, who offered feedback. Mendes opened concerts for Swift last year and she gave him the best advice ever, he told the British magazine NME in May.

"Taylor Swift said to me, 'Don't worry so much about messing up, because the people in the arena aren't critics — you're not on a singing show and they're not here to judge you. They came tonight strictly to have fun and because they love to listen to the music, so if your voice cracks or if you mess up something on the guitar, it's not going to bug them, it's only going to bug you.' That's something I think about every night."

No, Mendes is not the best singer in concert. His sometimes quivering, sometimes breathy voice cracks. But that adds to the vulnerability of his songs, many of which are about coping with lost love.

The lyrics on his sophomore album, "Illuminate," released in September, are a leap forward from those on his 2015 puppy love debut, "Handwritten." ("And now that I'm without your kisses, I'll be needing stitches," he moaned on "Stitches," the big hit from his first album.)

"I'm just writing about what I'm going through," Mendes told Rolling Stone last fall. "And [my fans] are growing with me and most of them are my age … I'm not just writing songs that are narrating my life, but everyone else around my age because they're super-relatable."

When Mendes was about to drop his second album last fall, Billboard magazine's headline screamed: "Shawn Mendes Brings Back Hunky, Guitar-Strumming Sensitivity."

In a world dominated by electronic beats, he emerged playing an acoustic guitar. Because that's what his idol, Ed Sheeran, did.

Mendes grew up in Pickering, a suburb of Toronto, as "the most average kid ever." He played soccer and hockey. Like many teens, he lived online, watching lots of YouTube.

Then along came American music executive Andrew Gertler. He'd seen the duo A Great Big World perform "Say Something" on NBC's "The Voice." He was trying to find the clip on YouTube and instead stumbled across Mendes singing the same song. Gertler became Mendes' manager and landed him a deal with Island Records. Buoyed by social media, the singer's first single, "Life of the Party," sold 150,000 copies in its first week. Not bad for a tune with no radio airplay.

Mendes is the unthreatening boy next door. And he knows it. "I'm proud to say I'm a role model for kids," he told the New York Times last fall. "I've never had a scandal. But I don't know if that's so much because I'm perfect or because people aren't caring enough yet. Give it some time. I'll probably be very upset, but it's part of the gig."

Mendes plays it pretty PG in his songs, even on the more grown-up second album. "Lights On" promises to "love you with the lights on." Is he talking about just making out or literally making love with the lights on? In "Bad Reputation," he pledges to treat her right even though she's got a bad reputation. "Patience" is about hooking up with an older women. Yes moms, he's having sex.

"I'm releasing a song about sex at 18, which is appropriate," he explained to the New York Times. "I wouldn't have done it if I were 16 or 17. I'll release a song about drinking at 21, you know what I mean?"

On "Illuminate," Mendes worked with producer Jake Gosling, who helmed Sheeran's first two albums and three One Direction projects. The results are more produced, such as the new single "There's Nothing Holdin' Me Back," which evokes Justin Timberlake.