Schoolhouse Rock! is an animated series of educational clips that uses songs to cover topics like grammar, social sciences, history, economics, mathematics, and civics for children that aired on ABC's Saturday Morning programming. David McCall, whose sons had trouble learning multiplications but easily memorized popular songs, started the show. Bob Dorough made the first song, "Three Is a Magic Number" which became part of the first season, "Multiplication Rock," along with "Ready or Not, Here I Come," and nine other songs accompanied by animation but Tom Yohe. The next season, "Grammar Rock," includes popular "Conjunction Junction," "Lolly, Lolly, Lolly, Get Your Adverbs Here," "Rufus Xavier Sasparilla," and "Unpack Your Adjectives," performed by jazz singer Blossom Dearie. There was also "Science Rock" and another season that's stood the test of time is "America Rock," which included "I'm Just a Bill" and "The Preamble." The next three seasons were "Computer Rock," "Money Rock," which included "Dollars and Sense" and "Where the Money Goes," and "Earth Rock." In 2002, a 30th Anniversary DVD was produced, and as recently as 2009 new songs have been produced for Schoolhouse Rock! affiliated products. The concept has proven to be a fun an educational program for children and adults alike.moreless