How did Euripides’ lyric songs change after 415 BCE?

In the works written after 415 BCE, the lyric songs of Euripides underwent a distinct stylistic evolution, becoming increasingly emotional and luxuriant.1

While this shift was sometimes criticized—notably being parodied by Aristophanes in his comedy Frogs—it proved highly effective in contexts where intense, frenzied emotion was required. A prime example of this power and beauty is found in the tragedy Bacchants, where his lyrical style perfectly captures the vivid horror and beauty of religious ecstasy.12