He is best known as one of the founding members of the Canadian Brass, in which he remains the quintet's tuba player, publisher, business administrator and professional relationships manager.

Descended from four generations of Swiss and German musicians, he followed his two older sisters into the choirs, bands and orchestras taught by his father.

[2] The Canadian Brass was formed in 1970 by Daellenbach and trombonist Gene Watts, enlisting trumpeter Stuart Laughton and University of Toronto Business School graduate Graeme Page.

[citation needed] His recording company, Opening Day Entertainment (ODEG), has produced over 73 CDs and DVDs.

Feature artist on Hunan TV's New Year's Show viewed by over half a billion viewers 2012 6.

[4] As of 2022, Daellenbach still plays in the Canadian Brass and, with the retirement of Gene Watts in 2010, is the last original member touring with the group.