Olivier Philippe Eltschinger, born in 1968 in Posat (FR), began playing the cornet at the age of six. After training with the village band in Farvagny and at the Fribourg Conservatory (diploma in 1988 in the class of Jaromir Janecek), he was a member of the National Youth Brass Band (1986–1990) and won the title of Swiss junior vice-champion on the cornet in 1986. He subsequently obtained conducting diplomas from the Fribourg Cantonal Music Association (1987–1990) and conducted the band of Mountain Infantry Regiment 7 from 1991 to 2000.
Alongside his activities as an adjudicator at music festivals, he performed in England with renowned ensembles, including the John Laing (Hendon) Band (regional champion in 1995), the Just Rentals (Cory) Band (1999), as well as First City Brass, with which he performed in 2000 at the National Brass Band Championships final at the Royal Albert Hall.
Having resided in German-speaking Switzerland since 1990, Olivier Philippe Eltschinger plays the flugelhorn with Brass Band Eglisau (elite section), where he has also served as assistant conductor, committee member, and head of training. He has also been involved in the organizing committees of the National Solo and Quartet Championship (2003 and 2008), as well as in the uniform renewal project in 2017. Since 2022, he has been a member of the executive committee of the Swiss Brass Band Association and co-responsible for organizing the National Solo and Quartet Chanpionship for brass and percussion instruments (CNSQ).
Professionally, Olivier Philippe Eltschinger is the owner of a fiduciary company. He holds the Federal Diploma in Finance and Accounting as well as the Bachelor Professional BP in Accounting®. He is also licensed by the Federal Audit Oversight Authority as an auditor.