DOUGLAS TATE was the most complete harmonica player of his generation and his influence reached around the world. Larry Adler regarded him as one of the finest “classical” harmonica players of his time. His abilities ranged from concert performer and session player to designer and builder of harmonicas. He was also a teacher and writer, and a dedicated advocate for his instrument and its musical possibilities. Tall and quietly spoken, with a delightful sense of humour, he always provided people with the help and information they required, without promoting himself.

Douglas Tate was born in 1934 in Yarm, near Stockton of Tees, where his father was chief engineer with ICI. He was interested in engineering as well as music and started out as an apprentice after leaving school at the age of 18. He rose through the ranks to become the head of research and design for what had become the largest computer firm in Europe, ICL.

Tate really wanted to teach and so he retrained and after a few years in a junior school he became head of music at a school in Dunstable, Bedfordshire. Soon most of the children were in voluntary music classes after school, some learning harmonica. Later he became head of business studies and then head of computing.

Tate had lessons with Tommy Reilly and he became world harmonica champion in the 1960s. He played many concerts with orchestras and for BBC Radio 3, and gave more than 250 performances at the Windmill and Prince of Wales theatres in London. He had a great liking for Baroque music and often played transcriptions of the great flute and oboe works. He also performed modern works and pieces written for him by British composers such as Arnold Cooke (obituary, August 17) and his friend Peter Jenkyns.

An example of his broad-minded approach to music was his collaboration, Electrio, with the rock musician Rod Argent (synthesizer) and Janet Edwards (piano). Their concert repertoire included an arrangement of Bach’s Concerto for Oboe and Violin. He was one of those who played harmonica on the soundtrack of the BBC long-running comedy Last of the Summer Wine, and he was present at some early Beatles recordings.

His knowledge of materials and craft skills led him to tinker with harmonicas and to build several harpsichords. When Tommy Reilly had his first silver harmonica, he took it to Tate to make it work correctly. Tate’s collaboration with Bobbie Giordano in the US led to his last design, the Renaissance, possibly the best in the world, but the development never stopped and he was still improving the design when he was found to be suffering from a brain tumour in March. It was then that the partnership with the new young management team from the oldest harmonica company in the world, C. A. Seydel Söhne, was forged to hand on and continue the development and production of the Renaissance.

His interest in teaching and the production of a grade system for harmonica players has also just come to fruition with the recent introduction, after work by a small team including Tate, of an examination procedure by the National University of Singapore (where he became Visiting Professor in Harmonica Design in November last year).

He wrote two books: Make Your Harmonica Work Better and How to Buy, Maintain and Improve the Harmonica from Beginner to Expert. Recently he edited and helped Ena Reilly to republish Tommy Reilly’s Studies for the Chromatic Harmonica.

All through his adult life, Tate was an active participant in the National Harmonica League in the UK and he wrote many articles for its magazines Harmonica News and Harmonica World. In 2000 he was invited to become president of the Society for the Preservation and Advancement of the Harmonica, in the US. He eventually stayed on for a second term. He helped Spah to become a stronger organisation and built up its conventions to be the great meeting places they are for artists and players alike.

He also helped to develop the use of internet harmonica communities to improve communication and exchange of information between players.

Tate was passionately interested in helping children to enjoy music. He always regarded the harmonica as one of the most cost-effective ways of starting on this journey. His progress in this endeavour may be what he would most like to be remembered for.

Tate was nursed through his illness by his third wife Barbara. He is also survived by three daughters from his second marriage.

Douglas Tate, harmonica player, was born on October 28, 1934. He died on November 16, 2005, aged 71.