Hello,

My Suggestions: Make a deal with the various multi-touch app developers to port their apps into Sonar X4. Adopting any of these products will make Sonar the top multi-touch DAW and a lot of musicians very happy.

1. Call Liine https://liine.net/
to design their Lemur apps to run it Sonar X4.

2. Talk to SensoMusic http://www.sensomusic.com/usine/
to incorporate Usine Hollyhock Touch Screen Edition into Sonar X4.

3. Contact AudioMulch http://www.audiomulch.com/info/what-is-audiomulch#play-it-like-an-instrument
Persuade them to make AudioMulch multi-touch friendly and then let it run in Sonar X4.

4. There are many music multi-touch iPad apps that can be ported to Windows. Some are midi controller apps and other are synth apps. Why not contact some of the top/best iPad app developers to port their apps for use in Sonar X4?

An addendum to the above post:

Great IPad and Andoid midi apps:

Wouldn’t be great if these apps can run under Sonar X4 on a multi-touch screen. No need to connect the iPad to your PC. It just works. Your PC is more powerful and your touch monitor has more real-estate than the iPad.
Here a few apps that will be great to work in the same screen as Sonar as VST's and VSTi's.

iJammer-style MIDI Control Surface for the iPad http://www.tradlessons.com/iJammer.html

SoundPrism Pro http://www.audanika.com/

Animoog http://www.moogmusic.com/products/apps/animoog-0

ExpressionPad http://www.expressionpad.com/

List of iPad midi Chord apps http://www.kvraudio.com/forum/viewtopic.php?uid=810&f=166&t=400657&start=0

More iPad midi controller apps. They will be a great companion to Sonar https://www.youtube.com/results?search_query=ipad+midi+controller+apps

So, I suggest that the Cakewalk people contact some of these developers to port their apps to work in Windows multi-touch screen and if need be exclusively in Sonar.