Seventeen is gearing up to unveil their latest music. The new 5th full album titled 'HAPPY BURSTDAY' has a total of 16 tracks, which includes solo tracks by the members. The released tracklist teaser reveals songs like "HBD," "Thunder" (the title track), "Bad Influence" (produced by Pharrell Williams), and others such as "Skyfall," "Fortunate Change," "99.9%," "Raindrops," "Damage" featuring Timbaland, "Shake It Off," "Happy Virus," "Destiny," "Shining Star," "Gemini," "Trigger," "Coincedence," and "Jungle." The album is set to drop on May 26 at 6 PM KST. In addition, Seventeen is scheduled to perform at Seoul’s Jamsugyo Bridge prior to their comeback.