Dorough would become the series' musical director, and the show was composed of many of his original songs such as "Three Is a Magic Number".
From "Conjunction, Junction", to "I'm Just a Bill", Dorough's upbeat tunes helped educate thousands of viewers about simple math functions, rules of grammar and the legislative process.
His son, Chris, says 94-year-old Bob Dorough died of natural causes Monday at his home in Mount Bethel, Pennsylvania. Originally intended as a school workbook, the concept was pitched and sold to ABC executive Michael Eisner, becoming the first of the long-running Schoolhouse Rock! series of educational cartoons that became an all-but inseparable part of of '70s and '80s childhood.
Bob Dorough, born in Arkansas and "raised" in Texas, immediately fell in love with music upon joining the Plainview Texas High School Band. He began his musical career serving as a composer, arranger and player in the Special Services Army Band between 1943 and 1945.More news: Sanchez lifts lid on tough beginning to life at Old Trafford
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After earning a Bachelor Of Music degree at the University of North Texas (1949), he made a beeline for New York City, where he took classes at Columbia University and immersed himself in the volatile jazz scene then taking place there - the bebop revolution.
Dorough, a jazz pianist and vocalist, wrote his first "Schoolhouse Rock" tune after a NY advertising executive approached him in 1971. You'd say, 'Hey, Miles, I really dug that set!' and he wouldn't stop.
"We had a captive audience - every Saturday, kids were eating cereal and watching cartoons, and some of them found 'Schoolhouse Rock!' and got stuck on it", he said.