Some information I've recently become privy to:
- "Boy No" is similar to "Days in Gloucestershire" and "Beautiful Girl," with touches of "Human Nature," in terms of production, with a great melody. Michael only ever recorded a verse and chorus, so the Estate would need to call in a second singer if they ever wanted to release it, but it's apparently quite beautiful.
- "Rocker" is allegedly the most finished post-trial songs: proper vocals all the way throughout (albeit with a somewhat incoherent lyrical narrative) w/ some screaming in the final leg, guitar solo, etc. Parallels have been drawn between it and "They Don't Care About Us."
- "H2O/Dark Lady" has been described as having comeback hit potential, had Michael lived to finish and release it. It's got a characteristically earworm bass riff (evidently comparable to Queen's "Under Pressure"), a wonderful melody with a quasi-Arabic chorus, and modern production with synth orchestra hits. The verses are half-baked but the chorus is releasable as-is, so it could be a strong vehicle for a rapper's album, similar to how Drake flipped "Don't Matter to Me."
- "Remember What I Told You" was recorded around June 19, 2009, and is the last song Michael ever put vocals to. It's reportedly similar to "Speechless" in terms of tone, and only has a short verse and multi-layered chorus. It can't be finished in the same way "Boy No" could, but perhaps (in the words of the wonderful individual who told me) it could be a great intro or interlude on an album.
- There's a song called "She Don't Want Me" that sounds a bit like a modernized "The Way You Make Me Feel." There's only a few lines recorded that presumably would've been the chorus, but the melody is catchy.