Barcarolle from 'Les contes d'Hoffmann' by Offenbach

Soprano Irina Iordachescu and mezzosoprano Cristina Iordachescu - Iordache - two sisters singing the Barcarolle from 'Les contes d'Hoffmann' by Offenbach, together with pianist Gonul Apdula, in the wonderful Concert Hall of 'The Sutu Palace' from Bucharest.

Link: https://youtu.be/is0Lb4cj_3c

Positive Psychology given credence by Academia:

Positive psychology is the scientific study of the strengths and virtues that enable individuals and communities to thrive.

Commentators on the subject Martin Seligman and Mihaly Csikszentmihalyi, note that:

"The field of positive psychology at the subjective level is about valued subjective experiences: well-being, contentment, and satisfaction (in the past); hope and optimism (for the future); and flow and happiness (in the present).

At the individual level, it is about positive individual traits: the capacity for love and vocation, courage, interpersonal skill, aesthetic sensibility, perseverance, forgiveness, originality, future mindedness, spirituality, high talent, and wisdom.

At the group level, it is about the civic virtues and the institutions that move individuals toward better citizenship: responsibility, nurturance, altruism, civility, moderation,tolerance, and work ethic."