Pop-punk band Mayday Parade has announced the second installment of their 20th-anniversary album trilogy, signaling a 'Sad' Fall for fans. The band also released a new single, 'Under My Sweater,' offering a glimpse into the project's overall sound and theme. This release follows the first part of the trilogy, continuing the band's celebration of two decades in the music industry. Fans can expect more news and tour dates to be announced soon.