I guess there are different aspects of "listening" like finding your sound, recognising styles, etc. But today, I want to talk about one particular aspect... solfeggio. I found a link to a great website for ear training (GNU Solfege - free ear training software | Main / GNU Solfege - Smarten your ears) while I was reading through a thread in Ed's forum. I was planning to do just some exercises on intervals and quickly realised that there was much more that I did not think of. Endless scales and the corresponding modes just to name one aspect. Does one need to really master everything in that programme (and there are probably things it did not cover...) to be a professional?