For those who jumped off Sonar to Studio One, the new version is now available:

Presonus Studio One v4 Features

New Copy Price

v4 Pro costs $399.00 new; v4 Artist costs $99.00 for a new copy.

Upgrade and Crossgrade Pricing

If you currently have any Pro version, you can get v4 Pro for $149.00. If you currently have the Artist version, you can get v4 Pro for $299.00.

The new chord track is the bomb. There is a good video on youtube showing how powerful it is.
Chord Track link

It will also be used with the new ARA 2 coming this summer from Melodyne.

Brian

The chord track is pretty trippy - especially altering the vocal.

Of course, you better not apply that to any MIDI instrument that contains MIDI keyswitches.