// title: radio tunner and harmonica
// author: grirgz
// description:
// Maybe I should not post code which come directly from the SC documentation, but It's been years that I read this doc, I never listened to the code example of the SelectXFocus man page, and now I nearly fell off my chair, these gems are hidden in examples, this is awesome ! I can play for hours with this harmonica =) I like this playability with mouse. I've added a variation a the end using MouseButton to blow
// code:
// radio tuner
// (jrh) (cc 2006)
(
{
    var a, n, mx, my, mwrap;
    n = 8;
    mx = MouseX.kr(0, 1, 0, 0.1);
    my = MouseY.kr;
    mwrap = { |pmin, pmax, min, max| sin(mx * ExpRand(pmin, pmax)) + 1 * 0.5 * ExpRand(min, max) };
    a = {
        var freq, fmul, phase;
        freq = mwrap.(10, 40, 200, 5000) + ExpRand(200, 3000);
        fmul = LFNoise0.kr(ExpRand(0.1, 8)).round(1/6).exprange(1, Rand(1, 1.2));
        phase = LFNoise2.ar(mwrap.(1, 20, 10, 1000), Rand(2, 5));
        SinOsc.ar(freq * fmul, phase)
    } ! n;
    a = a.add(
        SinOsc.ar(LFDNoise0.kr(11, SetResetFF.kr(*Dust.kr([1, 2] * 0.3))).range(0, 700) + 220)
    );
    SelectXFocus.ar(mx * n, a, my * n) * 0.2 + OnePole.ar(PinkNoise.ar(0.5 ! 2), 0.4)
    * Line.kr(0, 1, 3);
}.play;
)


// jimmy played harmonica in the pub where I was born
// (hh) (jrh) (cc 2006)
(
{
    var blas, zieh, mx, my, trig, which, amp, u, schnauf;
    var del = 9, det = 0.1;
    schnauf = 0.3;
    mx = MouseX.kr;
    my = MouseY.kr(0.1, 2, 1);

    blas = [0, 12, 24] +.x [60, 64, 67] ++ [60+36];
    zieh = [62, 67, 71,   74, 77, 81, 83,   86, 89, 93];

    trig = Dust.kr(1);
    which = ToggleFF.kr(TDelay.kr(trig, schnauf));
    amp = EnvGen.kr(Env([1, 0, 1], [schnauf, schnauf]), trig);
    blas = Select.kr(which, [blas, zieh]);
    u = SelectXFocus.ar(
        mx * blas.size,
        blas.collect {|f|
            Pulse.ar((Rand(-0.04, 0.09) + f).midicps * 0.5, 0.48 + LFNoise1.kr(0.06, 0.1), 0.2)
        },
        my
    ) * Slope.kr(mx + my).abs.lag2(2) * amp;
    u = Pan2.ar(OnePole.ar(u, -0.3), mx * 2 - 1);
    DelayL.ar(BPF.ar(u * 2, 1500, 0.3), del + det, LFNoise2.kr(0.2, det, del)) + u
}.play;
);


// using MouseButton

(
{
    var blas, zieh, mx, my, trig, which, amp, u, schnauf;
    var del = 9, det = 0.1;
	var trig2;
	var sig;
    schnauf = 0.3;
    mx = MouseX.kr;
    my = MouseY.kr(0.1, 2, 1);

    blas = [0, 12, 24] +.x [60, 64, 67] ++ [60+36];
    zieh = [62, 67, 71,   74, 77, 81, 83,   86, 89, 93];

    trig = Dust.kr(1);
	which = MouseButton.kr(1,0,0.1);
	trig = Changed.kr(which, 0.0005);
	
    amp = EnvGen.kr(Env([1,1, 1.5, 0.8,0], [0.5, 0.5,0.5,0.5]), trig);
    blas = Select.kr(which.round(1), [blas, zieh]);
    u = SelectXFocus.ar(
        mx * blas.size,
        blas.collect {|f|
            Pulse.ar((Rand(-0.04, 0.09) + f).midicps * 0.5, 0.48 + LFNoise1.kr(0.06, 0.1), 0.2)
        },
        my
    ) * Slope.kr(mx + my).abs.lag2(2) * amp;
    u = Pan2.ar(OnePole.ar(u, -0.3), mx * 2 - 1);
    sig = DelayL.ar(BPF.ar(u * 2, 1500, 0.3), del + det, LFNoise2.kr(0.2, det, del)) + u;
}.play;
);