The Beta Sigma chapter of Phi Mu Alpha Sinfonia was founded in 1936 at the University of Idaho. The chapter was active until 1975. The chapter was rechartered in 2003, and is in Province 38. From 2011 to 2019, the Beta Sigma chapter was the only chapter in our Province and the Pacific Northwest. Our province was joined by the Chi Chapter at Washington State University on March 30, 2019.