"Hagström - Everything in music" is a documentary about Albin Hagström who, based on his love of music, built an international empire with manufacturing accordions, guitars and amplifiers. Hagström started a variety of music stores, music schools, and published booklets. The headquarters were located in the small village of Älvdalen, Sweden, but already in the 1930s Hagström had a branch in the Rockerfeller Center in Manhattan. Among Hagström's customers and friends were Jimi Hendrix, Carl Jularbo, Frank Zappa, ABBA, Owe Thörnqvist. Larry Coryell and many others.