Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
Played over 50 games with Sona and this is the best build I've found.
Nothing much to add, if you're reading this chances are you already know the basics on Sona and don't want some **** telling you how to play. That just ruins the fun :)
If you disagree with any of my choices feel free to discuss it in the comments, don't downvote because it doesn't have a lichbane.. That item is overrated.