It's been a somber couple of days. First, the horrific Penn State allegations. Second, the passing of Smokin' Joe Frazier, an all-time great athlete. And now the grief extends into the music world: Heavy D, leader of seminal hip-hop group Heavy D & the Boyz, is dead at the too-young age of 44. Vibe reported that he died due to "respiratory issues." Below, check out "Don't Curse," a golden-era hip-hop track featuring an all-star cast with Heavy D at its center. The song's innocent fun co-exists with its ability to rock the party - a lost art these days.