The app will be called "MIDIdoktor". So, I have thought about mixing a tool from the field of medicine, in specific a stethoscope, with something typical for connecting MIDI controllers: the 5 pin connector cables.
As seen in the uploaded images with the stethoscope, I want the thing that is placed on the patients body replaced with the two connector cables as seen in the other two images.
Like a doctor listening to the MIDI connection. Got the picture?
I need one app icon designed in different formats that I can use for OSX and iOS apps.
The main point the app icon should convey is a connection between the MIDI standard and analyzing something like a doctor would do.
There are other ways to represent MIDI, like with hex-codes: 0x80, 0x90, 0x70 to list some important codes.
Another way to represent MIDI are MIDI sequences. Have uploaded a picture for that as well.
Maybe the first aid symbol (see attached picture) can be used as an idea as well.
Also uploaded a picture that I have quickly sketched on a piece of paper (midi_aid.jpg). The background should be colored and the lines in white.
I prefer flat icons with iOS7 like color scheme.