Contrary to popular belief, Sona can be pretty unforgiving to a newcomer, not to say that she is difficult though
She has the lowest defenses in the game, has no escapes or on kit CC and being unfamiliar with how much abuse you can take can often lead to her feeding hard
I'd like to learn about her curves.
Yup.
First off, you need to survive the laning phase, and there are a few things stacked against you there.
Mid-Late game, she provides insane value to her team if you can tag all of them in your auras, and Power Chord/Crescendo scale great.
Thing is, there's problems even then.
You get in the habit of remembering to bring your keyboard. It really does change your win rate by 8%