At the September 12, 2016 Board of Directors Meeting, the Board adopted a minor revision to the "Chorus Membership Commitment". The purpose of the revision was to clarify that a member is expected to attend at least 75% of the rehearsals in the 2 months prior to a singing performance.
Note that the Membership Commitment applies specifically to the Harmony Masters Chorus. One can still be a member of the Tualatin Valley Chapter and not perform with the Chorus.
The intention of the document is to help everyone understand what is expected of members in order to be allowed to perform with the chorus. You can view the document by clicking here. Chapter Members can also view it by logging in to the TVHM website and clicking on Documents.