My wife and I saw/heard EW&F long before they became a national hit. They were playing in the DC Summer in the Park program at the corner of 15th and Pennsylvania Avenue.
We heard music and went to see who it was. They were great. “September” is their best hit in my opinion.
It's cool you got to see them. They also did the soundtrack to Sweet Sweetback's Baadasssss Song, before they were famous.
In ‘77 we saw them in the Richmond Coliseum. We were the only 4 white guys in the place. Purple smoke everywhere.
We drove home in a VW bug at ten miles an hour, but at one intersection we crossed the stop line, just a couple of feet over, and an octogenarian pedestrian who was crossing put both hands on the hood and pushed us backwards.