Zack was primarily known for his appearances on various radio shows.
Zack was born in 1922 in Rhode Island and first sang at the age of 16 with his brother Richie, who should start a career later under the stage name "Cousin Richie".
In 1939 Zack founded The Dude Ranchers.
Some titles were "You Knew Me When You Were Lonely", "Cryin 'Tears" and "I'm Gonna Roll And Rock", many of which were recorded together with brother Richie.
Eddie Zack died in 2002 after an operation, at the age of 79.