Hi guys, I'm giving a presentation on ChucK tomorrow and I wanted to show off some of the basic features in a live coding session. I found that creating a vibrato (modulating the frequency) is far too hard. The example I'm looking at is http://chuck.cs.princeton.edu/doc/examples/basic/whirl.ck. In an infinite loop, you have this code: 30 + ( Math.sin(t) + 1.0 ) * 10000.0 => s.sfreq; t + .004 => t; Here, t is a float and s is a SinOsc. Now, what I would have expected is the following, more intuitive setup outside the loop: 30 + SinOsc freq_mod => s.freq; 1 => freq_mod.freq; I know that the first line with the "30 + SinOsc" is probably nonsense in itself, but I could work around that (by using a step UGen for example). My actual problem is that you can't chuck a SinOsc into s.freq. Consider this line: SinOsc freq_mod => s.freq; I get an error like this: arguments type(s) do not match: ... for function 'SinOsc.freq(...)' ... ...(please check the argument types) Is this something that the language is simply not capable of or am I doing something wrong? Best, Manuel