After college, he moved to Hollywood and was invited to perform as the guitar and banjo soloist on the Lawrence Welk TV show.
During this part of his career, he played with a diverse assortment of musicians, including Eddy Arnold, Connie Francis, Bobby Vinton, Sonny and Cher, and the Mothers of Invention.
To save costs, Vox had the Dick Denney Mid-Range Boost Switch [clarification needed] redesigned into a variable tone control.
It enabled him to express a better bluesy feeling on the electric guitar Casher asked the engineering team to have a breadboard with that circuit installed into a Vox organ volume pedal.
With a little experimenting, Casher and the Vox engineering staff were able to create a sound similar to a trumpet "wah" mute.
Universal Pictures hired Casher to be the featured artist on three movies using his prototype Wah-wah pedal: The Ghost and Mr. Chicken, The Shakiest Gun in the West, and The Traveling Saleslady.
He is also the producer of the Japanese anime television series, in English, Love Hina, Tenchi Muyo, and Sakura Wars.