Hi, Is it possible to extend a class from two parents classes? So the child class will have the data and functions of the two parents. I am not an oriented object programming expert, but I understand (maybe I am mistaking) that C++ is able to do that. At first I wanted to do a kind of extended SndBuf UGen including and playing automatically a score. The goal is to write short code like: MySndBuf s=> dac; 120 => s.bpm; s.score << 1 << 1 << 0 << 1; // write the score "kick.wav" => s.read; while(1) 10::ms => now; // let's play I made some quick testing, this is possible. But then appears the second Idea ;-) Sequencers are really useful so why do not have a basic sequencer common for other application. For example: // the Synth frequency driver MyFreqExtendStep f => TriOsc s => dac; f.note << 40 << 42 << 44 << 0; // Write score with midi note 120 => f.bpm; while(1) 10::ms => now; // let's play // The Event automatic boardcaster (to trig other scripts for example) MyEvent e; e.score << 1 << 1 << 0 << 1; // write the score 120 => e.bpm; while(1) 10::ms => now; // let's play Happy chucking, Ju