Ok, I was listening for first time to vanilla fudge's renaissance and around the fifht minute of the first song,
The Sky Cried - When I Was a Boy , i heard a really familiar tune, the thing is that this tune is from a kindergarden song wich is really well known in my country the famous and glorious "La lechuza hace shhh"
so, i believe none of this songs got inspired in the other one, but there must be some kind of classical tune where they got that melody from.
here is the link to a web where u can listen to the tune of "la lechuza":
search for the play button, u can also search for the song on youtube and ull find people singing it.
I couldn't find vanilla fudge's song on youtube, but i hope u can get to listen to it and tell me what you think and if you know where did that tune came from do so!! pleaseee =)