Computer USB Keyboards

The wide range of USB controller keyboards below vary in several ways but most will make a decision by the number of keys, and whether or not knobs and sliders are required for further control over your music software.
Most are USB powered and all of these are touch-sensitive (some with after-touch!). Some models feature 'transport' control buttons too, for physical 'at-hand' control over your software's start/stop/record/rewind features.