Articles in EnglishPiano Brand ResearchETERNA PIANOS, OR YAMAHA? Bydeathaya12 October, 2021 Eterna upright pianos with a Yamaha action seems very strange to most piano technicians. This article tells this Japanese brand's history by consolidating pieces of information found all over the internet.Read More
Articles in EnglishTechnical NotesPiano TuningHumidity Changes Bydeathaya1 October, 2020 One reason for piano to go out of tune is rapid change of relative humidity.Read More