K-pop girl group Le Sserafim has made a comeback with their fourth EP, "Crazy," which encourages fans to invest their passion in activities that excite them. This release comes six months after their third EP, "Easy," which saw them debut on the Billboard Hot 100. The group's member, Hong Eunchae, emphasized the album's straightforward message of embracing excitement and capturing the emotions that make their hearts race. The EP consists of five tracks, with the title track "Crazy" being described as an EDM-based house song with an infectious hook, evoking a sense of electrifying thrill. In addition to their musical exploration, the group also embraced the challenge of learning voguing dance for the title track, a demanding experience that pushed them to concentrate intensely and develop core muscle strength. Reflecting on their performance at the Coachella Valley Music and Arts Festival, the group's leader, Kim Chaewon, acknowledged the valuable learning opportunity it provided, emphasizing the group's commitment to continuous improvement and growth as they take their first step towards that goal with the new album.