Jesse Colin Young's cause of death has been revealed. The Aiken County Coroner's Office confirmed to PEOPLE that the Youngbloods' frontman died of complications of cardiac, atherosclerotic and hypertensive cardiovascular disease on Sunday,

Jesse Colin Young, The Youngbloods frontman and bassist who sang the counterculture classic "Get Together" and had a long solo career, died March 16 at 83.

As the leader of the Youngbloods, he sang an enduring anthem of the peace-and-love era, with the chorus, “Come on people now, smile on your brother.”