First of all, this is my first build!
This is a modified build to this one: Sona: Epic Heals, Epic Dmg, Epic Win (Updated 1/21/11)

I have played Sona for some time now, and i have made some modifications, so that it suits my own play style a bit more. I use this build in both ranked and unranked, and it works fine for me.

This is not a tutorial on how to play Sona, if you are new i would suggest that you try out the before mentioned build first. This is merely my thoughts on a slightly different Sona build that works for me, so maybe it'll work for you too :)

This build is for the solo quers out there!

This build offers more survival, though i'm sacrificing some of the mana. I know Sona has to spam her abilities due to her passive and for mere supporting purposes. But with this nice build i get the best of both worlds.

I get the more mana and cc resist from catalyst and now i actually have to use clarity late game. So mana issues won't be as big a problem either.

This way, if you make some minor mistakes, you wont be punished as severe, and have a bigger chance to survive a gank or a teamfight that has gone wrong. Now you don't have to play too cautious, and recall all the time, because of lacking in health, so that you loose stacks in your mejai's. And this way you can lane longer wich means more supporting.

I think the build order can be changed slightly, depending how you are doing. Are you getting alot of assists(even kills)? Build Mejais, if not - Go with Lichbane imedietly after soceres shoes. If you'r doing fine, you can build rabadons first and get Rylai's Scepter last. Are you completely raping the other guys? Dont waste money on Banshees untill needed(if needed). If not even needed, sell catalyst and get AA staff.