BPNs	Basic psychological needs
CAPBES	Choral Activity Perceived Benefits Scale
CFA	Confirmatory factor analysis
CFI	Comparative fit index
EFA	Exploratory factor analysis
MHC-SF	Mental Health Continuum Short Form
NAS	Negative Affect Schedule
PANAS	Positive and Negative Affect Schedule
PAS	Positive Affect Schedule
RMSEA	Root mean square error of approximation
SEM	Structural equation modeling
SDT	Self-determination theory
SPS	Social Provision Scale
SWLS	Satisfaction with Life Scale
TLI	Tucker–Lewis index
WHO	World Health Organization