Build 1.0.6 now has leaderboards working via Steam interface. Am currently working on getting this integrated into the game UI as well, but for now high scores can be checked out online through your Steam client.
Leaderboards currently include all 10 levels.
I've also tweaked a few things under the hood in response to some player feedback. Nectar is a little cheaper now meaning players can unload a clip of nectar for longer periods of time without having to refill.
Raging Butterfly difficulty mode also slightly increases game speed.
In the meantime, in addition to the classical score in the game, another composer has hopped on board with some revamped versions of the classical tracks into upbeat face paced tracks. I hope to have these integrated by full release time as an unlockable feature via achievement completion.
Thanks for dropping some F-Bombs!