Drawing in GL with X Y + Z axis

Hi there, I want to be able to draw in GL space freely with X Y + Z axis.

The idea is to make a kind of 3d phasescope for analysing audio (X+Y will be defined by phase and Z will be random I guess).

I have looked at jit.gl.sketch but can't find a way to make curved lines.

I've also tried jit.poke~ to get the audio data into a matrix but this way I can only seem to get either solid red green or blue coloured lines.

Can someone point me in the right direction?

Thanks.