First up, "Astyanax" (aka "Lord of King") by Jaelco. It was released in 1990 for the NES. I once found a version of the soundtrack on Zophar’s Domain; I don’t recall the details, but I know I had to install something to Winamp in order to play the file (all the music and sound effects were in one big, continuous file). It was sort of an emulator gamerip, I think.
The other two I don’t know as much about, but I will do what I can to find as much information as needed. "Solomon’s Key" and "Princess Tomato in the Salad Kingdom".
Thanks for your time and any help, guys!