Premiere Of Paramount Insurge's "Katy Perry: Part Of Me" - Red Carpet

HOLLYWOOD, CA - JUNE 26: Singer/producer Katy Perry (L) and singer Carly Rae Jepsen arrive at the premiere of "Katy Perry: Part Of Me" at Grauman's Chinese Theatre on June 26, 2012 in Hollywood, California. The premiere also included a special live performance by Katy for the first-ever Pepsi/Billboard Summer Beats series. "Katy Perry: Part Of Me" will be released by Paramount's Insurge Pictures on July 5, 2012. (Photo by Kevin Winter/Getty Images)

Kevin Winter

A headlining pop diva could use their opening act as a signal to the audience that they've got at least 45 minutes more to buy some merch and hit the restroom, or they could use the slot to expose their audiences to lesser known acts, support up-and-coming artists they admire and bridge inter-genre divides. A lot do the former. No one does the latter better than Katy Perry.

The "Swish, Swish" singer recently announced that none other than Carly Rae Jepsen, queen of opening concerts, critically beloved electro duo Purity Ring and Noah Cyrus will hit the road with her for her upcoming Witness tour. Thus continuing a singularly fire record of excellent choices for supporting acts.

The two acts join a list of past Perry openers that include Robyn, Janelle Monáe, Tove Lo, Tegan and Sara, Charli XCX, AlunaGeorge and Tinashe amongst others.

What's even more interesting in that in choosing these acts, Perry bridges an interesting pop music divide that few of her contemporaries seem interested in. In our increasingly fractured world, there're really two types of pop divas at the moment.

There's the few remaining monoculture pop divas. The types who always have a shot at getting their music played on the radio, who cover mainstream magazines, and are so famous that even your most out-of-touch aunt knows them on a first name basis. They're your Beyoncés and Britneys and Adeles and Gagas.

Then there's your "niche diva." The type of pop artist who maintains a fierce and devoted fanbase of their own that flourishes on platforms like Twitter and Tumblr, who often puts out music that pleases even the most discerning of critics. Though the niche diva may flirt with mainstream success here and there, they're mostly relegated to the pop culture undercard (sadly). They're your Bankses and Grimes and Róisín Murphys of the world. They're your, well, Katy Perry tour openers.

At the very least, it seems like these small-batch divas would make the perfect opening acts for the big-box divas. Don't rock bands always just bring lesser-known rock bands on tour with them to open? Don't rappers usually bring along other rappers? Shouldn't pop stars do the same? Besides, it's pop music fans who come out to their shows, who brave traffic and public transit backups, and who shell out increasingly shocking sticker prices for tickets. Don't they deserve a full night of relevant entertainment and exposure to new music?

And for all the talk of girl power and supporting creatives in vogue amongst pop singers at the moment, shouldn't headliners feel it something of a duty to, you know, actually bring other women on tour with them?

It's surprising how often it doesn't happen. Lady Gaga is currently on her Joanne tour without a traditional opening act of any sort (her frequent producer, DJ White Shadow, is opening some shows by spinning records). Rihanna once brought Kesha on tour, but increasingly seems to have a preference for male openers. Taylor Swift's openers for her Red tour were all men, but she did have HAIM and Rae Morris open select dates on her more recent 1989 tour. Beyoncé most recently relied on a mix of DJ Khaled, special guests, and artists from her own label. Ariana Grande deserves credit for bringing Victoria Monét and Little Mix on her most recent outing.

Though it's Perry who stands alone in her apparent commitment to bringing on other female or female-fronted pop acts.

It's a tradition that started with her first headlining arena tour, the California Dreams tour, back in 2011. She made the surprising decision to bring Robyn on the road with her. The Swedish pop star had one of the most critically adored and viral pop songs of 2010 with "Dancing On My Own." Perry brought her on board and showered her in praise. She's clearly a big fan (and, come to think of it, it's entirely possible that Robyn's signature blonde pixie cut inspired Perry's latest 'do). She continued the tradition with Marina and The Diamonds, Oh Land, Natalia Kills, Icona Pop, Kacy Musgraves, Betty Who and the aforementioned lot.

Perry is choosing female artists she actually seems to enjoy, making sure they get exposure and a nice paycheck along the way. Plus she's giving her audience more bang for their buck. Maybe other artists should take notice.

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