Gibson introduced the unique hexagonal magnetic pickup technology at the end of 1935, and combined it with the arch surface design. 1936 On May 20th, Gibson produced ES- 150 (Electronic Spain) at its factory in Cramaso, Michigan.
Charlie Christian, a jazz musician who established the unique timbre of electric guitar, thought ES 150 was the best electric guitar until 1936, so that 60 years later, ES 150 was still considered as a patent of Charlie Christian. Some jazz musicians also think that the "Charlie Christian" pickup of ES 150 is by far the best jazz pickup.