Let me address the King's Quest II intro music question with a llittle bit of history, stepping back to the first King's Quest game.
The very original King's Quest had an opening tune similar to that of King's Quest III. I believe Tom has a recording of it somewhere. In a later release, Sierra changed the opening music to an old tune titled "Greensleeves."
For King's Quest II, Sierra again used Greensleeves, only with a faster tempo.
Greensleeves' lyrics were originally composed as a poem in 1580, and the tune was added in 1652. Around 1865, new words were put to the melody, creating the Christmas song "What Child Is This?"
You can find MIDI files of "Greensleeves/What Child" on the internet very easily with a websearch, and fully sung and orchestrated versions on compact disc; Loreena McKennitt did a version in 2001.