I love devising harmonies to songs, but it's usually in the choruses, and Quietly so as not to disrupt the enjoyment and concentration of others. and many songs demand proper focused listening, in which case, should we not all Belt Up?
on the other hand, roaring along with a shanty is some of the best fun you can have.
our home town folk club runs guest nights, and singarounds. often there are twice as many at the singarounds as at the guest nights. everyone wants their little turn in the spotlight (me included). and many of the sing around habitues are singer-songwriters, some better than others. and some of them do not know trad 'standards' well enough to join in with. some just want to sing their bit, are there for the self-expression or whatever. fair play to them, but as a result it vfeels less like a Proper folk club to me! could the humming along habit be related to this Me in the Limelight aspect of folk\acoustic clubs?