Garden Grove, California — Eleven nuns take the stage wearing traditional black-and white habits but are anything but old school as they belt out songs to the ringing of electric guitar and a rock 'n' roll beat.
Known as "Siervas," the band was born in a Peruvian convent three years ago and now travels far and wide to perform.
Of all the extraordinary things about Siervas the most remarkable may be they are not just a novelty. They have a genuine international following.
Their songs of love and faith have earned over a million YouTube views, led to the release of two CDs and now they are waiting to see if they are among the honorees when Latin Grammy nominations are announced Sept. 20.
Siervas recently traveled to Southern California and drew 4,000 people when they headlined a Spanish-language Catholic music festival.
"Everyone was calling our office saying, 'We want to see these nuns, when are they singing?' " said Ryan Lilyengren, spokesman for the Diocese of Orange, which organized the event. "They're sharing their message in a way people are willing to hear it."
The nuns, who come from eight countries and range in age from 20s to 40s, insist they aren't rock stars. But they act the part when on stage performing to the electric guitar, steady drumbeat and catchy lyrics.
Their name, Siervas — Spanish for "the servants" — comes from the convent where the band was formed and still lives.
At first, they composed and played music together as a hobby after spending days praying with incarcerated women and the poor in Peruvian shantytowns.
When Siervas had enough original music, they compiled a CD. That led to a concert performance that attracted local media attention in Peru and then invitations to perform in nearby Colombia and Ecuador. Interest skyrocketed on the internet, and the group released a second CD.
Now, they rehearse together twice a week, melding upbeat lyrics with Latin pop and rock. Each nun also practices daily on her own, honing skills on instruments ranging from cello to electric guitar.
A YouTube video of the group standing on a rooftop helipad overlooking Lima, Peru, and belting out their song "Confía en Dios" — or "Trust in God" — has more than 1 million views.
The band's popularity comes at a time when the Catholic Church and other religious organizations are seeking to draw younger people. Among America's so-called millennial generation, more than a third reported no religious affiliation, and only 16 percent identified as Catholic, according to a 2014 study by the Washington-based Pew Research Center.
"Modern times have modern music," said Sr. Monica Nobl, a 40-year-old vocalist. "Pop-rock music is a kind of music we've heard all or lives. We grew up with that kind of music, so it's also just natural to use it."
Sr. Andrea Garcia, 47, remembers listening to Michael Jackson when she was a college student. She thought she'd pursue a career in biology, but found faith instead.
"We think this music, or this genre, resonates with young people today," said Garcia, a composer and vocalist from Argentina. "Our goal is that through the melodies, our lyrics will reach people."
They sing in Spanish and their themes are Christian, but fans post messages to them on social media from Asia and Europe as well as Latin America. And while many fans are devout Catholics, others are from different denominations or even atheists, Garcia said.
Milagros Lizarraga, a 53-year-old real estate agent in Simi Valley, California, said she isn't particularly religious but was drawn to the band's songs encouraging unity.
"I am not a churchgoer, but I love this music," said Lizarraga, who helped start a Peruvian community organization in Southern California. "I love it because they are breaking a paradigm. They are out of the box."
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