Harald Söderberg holds a concert diploma through Konrad Ragossnig at the Basel Academy of Music, Switzerland. Master classes for John Williams, Alexandre Lagoya, Oscar Ghiglia among others. Concert activity throughout Scandinavia, Europe and USA. Recordings for the Swedish Broadcasting Corporation
Harald has also been given Suzuki Guitar tuition since 1985. He holds a Teacher Trainer certificate and is at present engaged in Sweden, Finland , Iceland and Lithuania given Level 1-5 courses for trainees.