Astro held a live showcase on February 23, where they performed "Hide & Seek" along with dance track "Cat's Eye" and ballad tracks "First Love" and "Morning Call".
The group started promoting their title track "Hide & Seek" with the b-side "Cat's Eye" on music shows on February 25. They first performed the songs on Mnet's M! Countdown, followed by performances on KBS' Music Bank, MBC's Show! Music Core and SBS's Inkigayo.
The mini-album also appeared in the Billboard World Album (2016) chart, landing in #6 and it lasted for two weeks - on the weeks of March 12 and March 19. This garnered their debut success as thousands of fans from around the world recognized the group.
After being introduced in the web drama To Be Continued, the six-member boy group from Fantagio Music, Astro, has finally debuted with their mini album Spring Up. The collection of songs consist of five tracks that play up their flower-boy concept making this album very appropriate for the season. The songs play cohesively together and cement their style with pop and electronic sounds.
Spring time usually marks a new beginning, and that theme is prevalent throughout the album. The overall concept revolves around the emotions and thoughts that go through our heads during the beginning stages of love. “Hide and Seek,” “Puss in Boots,” and “Morning Call” all express the apprehensions of someone who wants to confess, while “Puppy Love” takes a completely different route from the rest and is a ballad about a first breakup.
The album starts with the intro track, “OK! Ready,” that gives the listener a taste of what’s to come. Rather than being a completely isolated track, the intro seems to be more of an extension of their title song “Hide and Seek.” The uplifting electronic sounds combined with the constant electric guitar rift and fast beat set the tone for a lively atmosphere.