ABSTRACT Group singing is beneficial for health and well-being but many new clients presenting in the singing teaching studio come from choir backgrounds and with established voice problems. Amateur group singers do not usually receive individual feedback on their singing efforts, so there is a need to establish a self-monitoring procedure. This qualitative inquiry involved purposive sampling of 18 amateur choir singers trialing a self-assessment (SA) protocol for three weeks. A pre-trial and post-trial online questionnaire was completed to assess the impact of the SA protocol on singing behaviors. Three follow up online interviews were conducted to further interrogate the processes experienced by participants. Post-trial results revealed an increased awareness of healthy and unhealthy singing habits evidenced by changes in thinking and mental attitude, and in behavior and practice improvement. Visual and aural self-assessment were easiest for participants to employ with kinesthetic self-assessment being the most difficult. Choir leaders need to continue to educate the singers in their care concerning vocal health and efficiency and encourage self-assessment during singing and speaking acts. Individual singers in an amateur setting must be encouraged to become independent learners, taking responsibility for their vocal health through self-monitoring procedures.