The question is, "What kind of music are people probably talking about today when you hear them call it 'folk'?" What should you expect to hear at a "folk" concert?

Let's see, you can have one performer or several.

The instruments can be acoustic or electric.

Any melodic scale is acceptable.

Any genre except classical is likely to appear in a "folk" performance.

Large orchestral backups are a possible disqualification. (Is Celtic Woman a "folk" act?)

Singer-songwriter music is preferred. In fact, it might be the most important element.

If so, "folk music" chiefly means music and (especially) song performed by the composer/songwriter, along with whatever else sounds sort of like it - as long as it isn't classical.

True?