Heckling as in witty two way banter has always been common in folk clubs.
Heckling with malice tends to be in more theatre styled concerts, usually if the performer uses humour.

Two heckles I recall, both by “friends..”.

Hey Ian! Sing us that one you sang at your mother’s wedding!

Did you write that song? No? Who wrote it? Really? Did he write it before or after he died?