“It wasn’t until their fifth album, 1974’s Open Our Eyes, that EW+F started to have hits. (Lead singer Maurice) White had brought in Charles Stepney, a friend and colleague from Chicago (and also in-house arranger and producer at Chess Records, where White had cut his teeth as a session drummer in the late 60s), to co-produce, and sessions took place in Colorado in 1973,” (The Guardian).
“Philip Bailey had joined, and he and Maurice became a potent force with their striking dual vocals – an idea the band patterned in part on Sérgio Mendes’s Brasil 66. The first single from the album, ‘Mighty Mighty,’ echoes key EW+F influences (Sly + the Family Stone formally; Curtis Mayfield in the title and lyrical tone), but is definably the work of a band in charge of their own sound and style.”
The 1974 tune hit #29 on Billboard‘s pop chart and #4 on its Hot Soul Singles chart. Its heavy funk groove drives the track to its first upward half-step key change (0:52). After the first chorus, the tonality falls back to the original key at 1:25. The cycle repeats from there.