B1A4 is making their strongest comeback yet with their fifth mini-album.

Billboard published an article this week highlighting the "fun, pop-leaning" style of their latest single "Solo Day."

"B1A4's latest has a carefree-pop sound to make it a spot-on summer single a la Girl's Day's 'Darling.' The quintet's spring 2013 release 'What's Happening' riffed on One Direction's shout-along pop style and 'Solo Day' is another feel-good track one can blast from the car speakers," writes the music magazine.

The media outlet adds, "There's lively guitars, bumping 808 and a folky whistle section - pervasive in pop and K-pop music alike nowadays - making the song all the more addictive after multiple spins."

Although the song itself is bound to be a summer hit, the music video is what's been getting the love and attention of fans.

"The accompanying music video keeps the tracks' exuberant spirit alive. The members play different characters in a video game that comes to life. Each member has their own storyline, but come together to ride in a convertible, stuff themselves at a diner and eventually discover an alien spaceship eager to destroy anything it its path," explains columnist Jeff Benjamin.

The idol group released their new album on July 14 and is currently busy with their comeback promotions.

The five-member idol group has been making a name for themselves within the K-pop industry after debuting in 2011. The K-pop group has both won and been nominated for various awards every year since their debut.

Despite their success, B1A4 remain as humble as they were before they became the K-pop sensation they are now, evident from the interview members Jinyoung and CNU gave for Singles magazine.

"We've heard that we're called 'trending-dols,' but we don't think about it. We don't want to get narcissistic so we try not to think like that," stated CNU when asked about the rising popularity of their previous hit, "Lonely."