In 1947, a musician by the name of Bill Meeks was working on a radio station in Dallas, Texas. He created commercials and jingles for the sponsors of the show. People liked what they heard and what he did for their sales and they wanted him to devote more time to their advertising campaigns. In 1951, Meeks formed his own agency, PAMS. This stood for Production Advertising Merchandising Service.
He soon realized that many radio stations would become more successful if they had their own identifying call letters. To accomplish this, PAMS designed a jingle package and called it "Series 1" The premise was that stations would hear the demonstration tape (demo), and re-write the lyrics to suit their individual needs. PAMS would then get their singers to re-sing the jingles using the new words over the already-existing background. As PAMS became better known, they eventually established themselves on both coasts.
In 1971 a man named Jonathan Wolfert started working for PAMS. Three years later he decided to start his own company. JAM (from the initials of John And Mary, his wife) was created in November of 1974. Until the 1980's, they primarily worked with radio stations.
During the 80's they began doing television commercials. Today, JAM has clients from all over the world. In addition to their regular staff, they also employ freelance writers, singers and musicians.