User blog comment:YaoiBlossom/TennStar's AD Sona Guide/@comment-4434378-20120502001233/@comment-4636093-20120502204238

Sure you don't need to spam your skills, but you will be though, you want to get your power chord charged up as soon as possible for the slow or the damage debuff. And why not benefit from your low cooldown skill use even more.

Sona is a very skill oriented carry when played as such, like Ezreal or Corki. I don't mean complete the Trinity Force immediately, but do get a Sheen pretty soonish to drive home Sona's awesome early game.