From the SZC: Beyond Dead OST (by MonsterRobotStudios.com). This track is the main menu/merchant theme. I'm disappointed if you don't get the title reference.
Catchy, quirky, and laced with beloved leitmotifs, the OST to Deltarune's second chapter solidifies Toby Fox's status as a VGM big shot. Bandcamp New & Notable Sep 29, 2021