DYS was a straight edge hardcore punk band from Boston, Massachusetts, and part of the notorious Boston Crew along with contemporaries such as SSD and Negative FX. They released two LPs: Brotherhood, an album still held in high regard by fans of hardcore music, and DYS (i.e., self-titled), an album that is more a hard rock or heavy metal album than a hardcore album. Both albums have been reissued together on a CD by Taang! Records (titled Fire and Ice), and Brotherhood has been reissued on CD in early 2005 by Taang! Records in its original format with the addition of the Wolfpack demo tape with Hüsker Dü singing back-up vocals as well as on vinyl by Reflex Records (as Wolfpack, with additional tracks. DYS took its name from the Department of Youth Services, a Massachusetts governmental organization. Singer Dave Smalley went on to sing for Dag Nasty, ALL, and Down By Law. Bassist Jonathan Anastas became founding member of Slapshot before leaving the music business for a career in advertising.