Back in Black. Retro Fest is releasing a compilation highlighting America and Britian’s hottest new talent. On Friday December 2nd the festival will debut a new cut from Black Theory entitled “Dat Sh__”. The song features Famsquad Justin Walsh and arrives just one week before Retro Fest in New Albany Indiana. Purchase tickets for Retro Fest below and stay tuned to Keeynote.com for the official release.