Any style of music which represents a community and can be sung/played by people who may or may not actually be trained musicians, using the instruments available to them.
As times have changed, folk music has changed to reflect the times. Many of the old labor and protest songs are still sung today, albeit with new verses that were added to reflect the context in which the songs were resurrected.
Traditionally sung and played within communities - i.e. not made for popular consumption - American folk music became embedded in the mainstream tradition, creating some combination of folk and pop music, during the mid-20th Century "folk music revival". Thanks to radio and recorded music, artists and fans in New York could develop an interest in the music indigenous to the Gulf states. Folks in Seattle could discover the fiddle tunes and dance numbers from the folk music tradition of lower Appalachia.
Thus, traditional American folk music started to blend with mainstream recorded pop music, as the Baby Boomers came of age all at once, many of them listening to Harry Smith's Anthology of American Folk Music. The music of the folk revival was narrative pop music with a social conscience. Since then, community-driven musical forms (punk rock, hip-hop) have evolved from this combination of folk and pop music. Now, in the 21st century, American folk music has strong influences from all of these musical movements.
What is the most gracious way...
To greet an ex-BF who was a total and complete a$$hole to me BUT has formally apologized.
He asked me to be "open to a friendship". I (finally) agreed invited him to a quiet folk music open mike where a lot of my friends will be. I invited him to bring his own friends and ladyfriend.
I have not spoke to him in years.
What is the "high road" here when it comes to greeting him/ interacting with him?