ZincTrumpet
What about Air Ignite? -> http://www.airmusictech.com/product/ignite#.WOiyC_mLSUk
Sort of a scratchpad for messing around with ideas before moving them to a DAW for further work.
I picked Ignite up for cheap last year on sale. It's a keeper. There is a lot to like about this one, but with a few head scratchers tossed in with the implementation. I hope they continue to develop this and it evolves with the potential that it has. But overall, it is very original and innovative with it's scratchpad approach. It's designed to have a few DAW features, but not require any engineering knowledge. Aimed at musicians that want a non-technical way to write and record their music. A good way to play a few quick ideas in and then export for DAW.
Ignite consists mainly of an Arranger and Piano Roll views. No project timeline or tracks. Each clip, or group of clips have it's own timeline.
I think all DAWs should have this layout as an optional view. Keep it simple for inspiration. For example, you should be able to press a menu button, and get a simple trackless screenset or workspace that lets you freely record audio or MIDI phrases (clips) anywhere you want and to rearrange them into multi-clips and song clips by dragging them around until you like the result. With Ignite, you can do this.
The head scratchers occur if you are used to a full blow DAW, and want to be able to manipulate certain things in Ignite, and discover they deliberately left some feature out to keep things simple. It is what it is. Write your tune, and then move onto your real DAW!
You can import wave files, and record from two audio inputs. You can export wave and MIDI to your DAW.
You cannot import MIDI files or patterns, or use VST instruments, but there are 275 MIDI instrument sounds included, as well as some effects. The sounds are of high quality, most likely borrowed from other AIR instruments, and sound real enough to work with. Much better than GM sound fonts, LOL!
The Play tab shows your onscreen keyboard controller, and has the optional Player Mode switch, which lets you select chord, phrase, or arp mode. If you select the "Move to key signature" option, the key signature you set in the control bar determines the chords or scale used. The downside here is that you are limited to major or minor only, and there are a limited number of patterns to work with. But you can just use normal mode and play in what you want.
Once you have recorded your clips, there is no way to change chords or keys in them, except for manually editing them in the piano roll. So not so great for experimenting with chord changes. As I said at the beginning of this thread, I am still on a search for the ideal tool to experiment with scales and chords with.
Hopefully some of these shortcomings will be addressed with a feature update at some point, but I have noted that there are some feature requests over at the AIR community that have been floating around for a few years. I hope that AIR plans to continue developing this, because this is a unique tool.