My technique for emotional soloing is to work on the expression of different moods and to try to express the 2 extrems of every mood like - very quiet very loud ... as a introductional example. I also work with the expression of colours once you get more advanced.

Emotional soloing for me is a different view how you start to practice your guitartechnique - you change your perception of playing guitar and then more and more you change your way of playing.

Shreding can be very cool if it is truely connected to emotions ... its just one expression. Personally I can not hear these guitarplayers who just play fast because they think it cool and no emotions behind.

Greetings

HP