Ace of Angels (AOA) have been hard work for their comeback, and soon they will induce a "Heart Attack" at the upcoming KCON concerts in America.

On Monday, AOA and K-pop boy band Teen Top were confirmed for the 2015 KCON lineup, joining VIXX and Girls' Generation for the festivities at the Prudential Center. Unlike the other acts announced, however, AOA will be performing at KCON in both Los Angeles and New York.

According to Billboard, AOA will be performing on Aug. 2 at the Staples Center alongside Zion. T, Crush, Red Velvet, Block B and Shinhwa. Then, on Aug. 8, AOA will join the New York line up to entertain fans on both coasts.

The timing seems just right, as the girl group recently made their comeback with the title track "Heart Attack," after gaining popularity with hits like "Mini Skirt," "Short Hair" and "Like a Cat."

"It's an honor to be able to promote with our senior groups and we believe that there could be a lot to learn from closely watching the seniors," said AOA's Chanmi according to allkpop.

"However, we want to show charms that are unique to ourselves."

But AOA won't be the only group to attend KCON this year with new promotional material. Reportedly, Girls' Generation is expected to make their first Korean comeback since Jessica Jung's departure in the coming weeks.

 Reportedly, five of the eight remaining Girls' Generation members were sighted with new hairstyles last month, which typically indicates an impending comeback for an idol group.

Along with an expected June release from Girls' Generation, reports indicate that 2015 will feature a comeback from sub-unit TaeTiSeo (Kim Taeyeon, Tiffany Hwang and Seo Juhyun) as well as a solo debut from lead singer Taeyeon.

Check out AOA's "Heart Attack" below: