Joseph Grubaugh majored in Music Theory and Composition and received his degree in music at the University of the Pacific in 1972 before beginning a three and one half year apprenticeship with Albert C. Muller in Sacramento, California. In 1977 he went to work for Hans Weisshaar in Los Angeles where he continued to study restoration techniques. While there, he met his future wife and partner, Sigrun Seifert.
They moved to the San Francisco bay area in 1979 and they have worked, lived and raised a family in Petaluma, California,North of the Golden Gate Bridge since 1980. In 1982 they collaborated on their first instrument together and since then, have continued in the tradition of making and labeling their creations jointly.
He was recognized at the First American Federation of Violin and Bow Makers (AFVBM) International Competition held at Lincoln Center, New York City in 1984 where he won 3rd prize overall. Since then he and Sigrun Seifert have won 5 Gold medals and 4 Silver medals at the Violin Society of America for their work together and were both declared Hors Concours by the Violin Society of America in 1998.
In 1993 and 1994 they organized and attended a workshop at the Smithsonian’s Conservation and Analytical Laboratory outside Washington DC under the sponsorship of the AFVBM. They have shared that experience and continue the search for better techniques in work to instruments that come into their shop. Joseph has also been a frequent presence on the teaching staff of the VSA sponsored Oberlin Violin Making Workshop since it’s beginning in 1998.