On the move music production? You'll need one of these then.
Matched with the also-seriously-dope LPD8, the LPK25 is pretty much everything a mobile music producer could ever need. With 25 keys, octave up & down buttons, tap tempo control and even an arpeggiator built into a frame that measures less than 13" across and weighs less than 0.5kg this is a serious bit of kit despite its diminutive size. Obviously, the first thing that would come to my mind when presented with something like this would be, "yeah, but does it actually play well?" and the answer is an emphatic, YES! This little keyboard exudes class and actually has what feel like proper keys, considering its' size. Package that with the add-ons, like the arpeggiator and you have a seriously tempting, compact controller.
If you need a compact keyboard controller for music production in a cramped space or on-the-go then the only reason for not buying one of these would be that you already own one.