Vidas Pinkevicius conversation with Hans-Ola Ericsson, a world-renown Swedish organist, pedagogue, and composer, currently the head of organ and church music department at McGill University in Canada. He shares his expertise and insights on modern organ music, the music of Bach, earlier music, his compositions, and of course his interest in the nature of sound, because he is also the creator of Studio Acusticum project in Piteå, Sweden.