peoples...
Hitting the wrong keys is lack of piano skills, it takes time for you to gain experience and that's really it. Considering you the piano noob, you would also have difficulty in findig where you placed the samples. Yes, you assign which sample goes to which key, so it's human error which can be bypassed if you know to work the routines/templates for assigning your drums to keys.
Routine man, that mpd is waste or a luxury...