Lyn Greene, Joy Franz, John Jellison, Marcus Olson, William Parry, & Eddie Korbich

When did Lyn Greene, Joy Franz, John Jellison, Marcus Olson, William Parry, & Eddie Korbich start making music?

Lyn Greene, Joy Franz, John Jellison, Marcus Olson, William Parry, & Eddie Korbich's first song How I Saved Roosevelt released on Thu Jan 01 1970.