Baby on the Way for Lukas Graham

06/06/2016 at 09:30 AM ET

Lukas Graham girlfriend expecting first child
Chapman Baehler

Once he was 27 years old — and found out he’s going to be a dad!

Danish singer Lukas Graham and his longtime girlfriend, high school sweetheart Marie-Louise “Rillo” Schwartz Petersen, are expecting their first child, he confirms to PEOPLE.

“In September, a little golden nugget will be welcomed into the world,” Graham tells PEOPLE exclusively. “Seeing my child born is so much more important than anything else I’ve got going on.”

The exciting news comes as his band‘s first LP, Lukas Grahamdebuted at No. 3 while their breakout hit “7 Years” continues to climb the Billboard charts, currently sitting at No. 6 after peaking at No. 2 earlier this spring.

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The album is largely inspired by family, particularly Graham’s own father, who died of a heart attack in 2012. The most prophetic lyrics are in “7 Years,” which reminisce on his youth while pondering his future, which he sees a partner and children in (“Soon I’ll be 30 years old … My woman brought children for me / So I can sing them all my songs / And I can tell them stories”).

Lukas Graham girlfriend expecting first child
Courtesy Marie-Louise Schwartz Petersen

The new addition to Graham’s family will arrive in the fall, but the singer tells PEOPLE he will take two months off from his tour to focus on Mom and baby.

Graham (born Lukas Graham Forchhammer) grew up with his Irish father and Danish mother in Christiania, a progressive commune in Copenhagen.

He found fame in Europe in 2011 when he began posting original tracks on YouTube; then in 2012, his namesake band released its album, which went quadruple-platinum in his native country before his stardom skyrocketed throughout Europe.

— Jeff Nelson

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Dawn on

How sweet! That song gets me every time I hear it. Best wishes!

Mrs. B on

So he’s the guy who sings that irritating song. I know a lot of people love it, but it’s not my cup of tea. Anyway, congratulations to him and his lady on the upcoming birth of their baby.

Tieraney on

He already sounds like a great dad…can’t believe he is 27, in that picture he looks about 16!

Sheila on

Love me some Lucas damn he got the pipes! Keep it coming Lucas..

Anjelica on

So happy for him. Congrats.

Tracy on

Lukas is by far one of the best singers I’ve heard in such a long time ! He ranks right up there with British born singer Adelle ! Wow can he sing ! He hits every note perfectly ! Bet he will make a great dad too !!!

Sue on

What a voice!! Your girlfriend is beautiful like you ! 6 hours to your concerts Dallas ot Saint Louis not fair ! May God bless you and yours ! Keep singing with that beautiful voice. Love to you

Victoria on

I am so happy to hear that he is a dad. I bless the baby and the parents to their new family. Xoxo

TRO on

Omg I love Lukas I can’t belive he’s a dad and I heard that he’s a way good cook

Patty Williamson on

I love all your music. You guys are so together. Thank you for sharing your souls and talent. I am so happy to hear you and your wife are having a baby. Congratulations and enjoy all the love you have made.

Tammy on

Amazing voice and amazing person! The world could use more Lukas Grahams!!!! Their baby is blessed to have such great parents!

sofia on

i love 7 years and congrats on the baby good going for ya