The Meaning of Republic 606a3–b5
The Classical Quarterly
It is argued that in lines 606a3–b5 of the Republic, Plato holds that the best part of the soul, if not suitably educated, may be vulnerable to emotions that are stirred up during such situations as the viewing of a tragic performance. Whatever the consequences for Plato's theory of the soul, this passage makes it clear that at least here he is willing to speak in these terms.
Mastrangelo, Marc, and John Harris. "The Meaning of Republic 606a3–b5." The Classical Quarterly 47, no. 1 (1997): 301-305. https://www.cambridge.org/core/journals/classical-quarterly/article/meaning-of-republic-606a3b5/B3DBDB438627CB5C5A4F2E50E71584F3