It’s not a surprise that singing in a choir is related to better quality of life. It has been explained by increased social capital, empowerment, lifting the mood and so on. However a study made in Finland shows other kind of results among older adults. Surprisingly older adult choir singers reported higher physical well-being than the comparing group of non-singers but not any significant difference in psychological health.
Reference:
Julene K. Johnson, Jukka Louhivuori, Eero Siljander: Comparison of well-being of older adult choir singers and the general population in Finland: A case-control study. Musicae Scientiae. https://doi.org/10.1177/1029864916644486