scMidiKeys

(
//Make SynthDef
SynthDef(\sineNote, {|out = 0, gate=1, freq = 262, amp = 0.2|
    var sig, env;
    //Use sustaining envelope
    env = EnvGen.kr(Env.asr(0.1,1,0.1), gate, doneAction: 2);
    sig = SinOsc.ar(freq);
    Out.ar(out, sig * env * amp);
}).add;
)
(
//Initialize MIDIClient
MIDIClient.init
//Connect Instrument(s)
MIDIIn.connectAll
// create array which will hold the individual synths for each key
~keys = nil!128;

MIDIdef.noteOn(\noteOn, {|vel, note|
    ~keys[note] = Synth(\sineNote, [\freq, note.midicps, \amp, vel.linexp(0,127,0.01,1)]);
    note.postln;
    vel.postln;
    })
//If you want them to last after CmdPeriod
// .permanent_(true)
;

MIDIdef.noteOff(\noteOff, {|vel, note|
    ~keys[note].release;
    })
//.permanent_(true);
;
)