iPadMusic.com has a demo of Propellerhead Reason running on an iPad via a desktop sharing app. Controlling PC/Mac apps from your iPad isn't anything new, but this particular app is! Parallels Access and the desktop agent are both free!
zMors, the 4 layer iPad synth, has been updated with a variety of improvements and is still on sale!
What's new in zMors v1.01
- Cloud presets will be cached if there’s no connectivity
- Sequencer score length is shown
- Default sound in better quality (sub octave , decay, level)
- Added glide mode when decay value > 10sec
- Saving a preset from now on always creates a new item
- Improved Modwheel assignment in user interface
- Keyboard pitch is disabled by default in System menu
- Attack, Decay, Release now up to 10 seconds
- Editable sound designer profile via System menu