and in the 'THESIS' I am developing about how to recognize folk/traditional music, this is one of the characteristics I will point to...there is music which is designed to be sung 'at' you and music that is meant to be sung 'by' you or 'with' someone else! All can be fine music, but even some music played on acoustic instruments and sung by plain people in quiet manner is clearly 'arrainged' and designed as 'performance' music. I can enjoy this, but I soon hunger for music done 'with' people or by ME! Even some folk/trad is solo music, but a lot of it tends toward shared music done 'with' others...and there is no substitute for that feeling!