Here are three stories about the relationship of funk to the avant-garde.
Meshell Ndegeocello at Tonic
In my twenties, I forced myself to experience a lot of very highbrow avant-garde music: free jazz, experimental electronica, and various combinations thereof. One such experience was a show at Tonic. I forget who was on the bill exactly, but it included Susie Ibarra and various other downtown luminaries. The group was ad hoc and clearly had never played together before. Their freeform improvisation was colorful and interesting, but tough to get an emotional hold on.
During the second set, Meshell Ndegeocello showed up, and the band invited her to sit in. She sat onstage with her bass for a minute or two, just listening to all the atonal noise swirling around her. Then she started playing a simple G minor funk groove, quietly but insistently. One by one, the other musicians locked into it, until the whole group was actually playing together, not just at the same time, but together. It was the best show I ever saw at Tonic. It also made me realize that the best musicians play stuff that makes sense.