How do I play a sequence of notes with an FM synthesized sound?

[annamontare]

So I've learned how to make an FM sound following the tour, and I've learned how to play a sequence of notes via FM using just a basic saw oscillator, but I'm not sure how to combine the two.

I'd like to be able to make a complex FM sound with multiple operators, and also have that sound play a melody. But I'm not quite sure how to get there.

For some code examples, I've got

o: saw ~fm >> mul ~amp
~fm: sin 2000 >> mul 400 >> add 440
~pat: speed 1.0 >> seq 34 34_34_ 36__36 34_
~amp: ~pat >> envperc 0.001 0.2

which plays an FM sound with some rhythm, but no pitch changes.

Alternatively, (based on the demo) I can make a saw wave that has rhythm and pitch changes:

o: saw ~fm >> mul ~amp
~pat: speed 1.0 >> seq 34 34_34_ 36__36 34_
~fm: ~pat >> mul ##Math.pow(2, (60-69)/12) * 440#
~amp: ~pat >> envperc 0.001 0.2

but I lose the fm texture.

I've tried various things like multiplying or adding a separate texture signal, but so far haven't been able to get something that has both the pitches of the sequence I input and an FM texture.

[chaosprint]

I am expecting this to work:

out: sin ~fm >> mul ~env
~fm: sin 100 >> mul 100 >> add ~pitch
~env: ~seq >> envperc 0.01 0.2
~seq: speed 1.0 >> seq 60 62 64 65
~pitch: ~seq >> mul 262

but there is a bug, the seq only outputs the pitch ratio for one samples while the rest are zeros.
so we probably need a new node to hold the pitch ratio or change the seq behaviour.
but for now I can hack with the meta node:

out: sin ~fm >> mul ~env >> mul 0.5
~fm: sin 2000 >> mul 300 >> add ~pitch
~env: ~seq >> envperc 0.01 0.2
~seq: speed 1.0 >> seq 60 62 64 65
~pitch: ~seq >> meta `
	output.pad(128, 0.0);
    for i in 0..128 {
		if input[i] != 0 {
        	output[i] = input[i] * 262;
			z = input[i];
		} else {
			output[i] = z  * 262;
		}
    };
    output
`

anyway this is a great question and urges some rethinking on seq behaviour. I will look into it further