I agree that It's All Been Said Before should NOT have been the first single release off of 1975. Maybe as a prerelease of the LP in 1974 it may have whetted some curiosity. He's My Man is a stronger song, IABSB just seems to bop around in a very light and frothy manner similar to the Floy Joy LP. I would not have been adverse to HMM being a more shared lead. Mary and Scherrie vocally complimented each other-witness You're What's Missing in My Life. Plus the song is great for vocal interplay with 2 people singing he's my man. Much better song for a duet than Touch which didn't lend itself to the song and probably made people wonder why 2 women were singing to one person about their touch.
I actually would have preferred IABSB as a second single as opposed to Where Do I Go From Here. Never got too into that song. I would have loved Bend a Little on 1975 and had it released as a single. I was still fine with HMM as the first single. All of it set the stage for High Energy.