GSS: "very often traditional songs can be sung successfully on acoustic instruments or unaccompanied,whereas some pop songs and all electronic songs ,and some songs that need amplification do not seem to work,without the electronic /electric devices[tremolsticks wah wah pedals etc]"

Just curious, but what are you including in "all electric songs"? Some 80s electronica can work very well acoustically - for example the Johnny Cash reworking of Depeche Mode's Personal Jesus.

(which for the record I dont think is either traditional or folk btw)

Pete.