I was planning to buy a very small MIDI keyboard (akai lpk25).
Of course to make it produce sounds, I would need to connect it (via USB) to my laptop.
Question: say one day I want to go to the park and play a bit, is there something I can plug to the keyboard to make it output sound which is not my laptop (or mobile phone, since I don't have one)? The smaller the merrier!
I am not sure how these things are called, I guess MIDI synths.