Since this is MSH-specific, I'll add the following information reposted from the Spider-Man thread:
By the way, if anyone is familiar with the 1967 Christopher Lee horror film Theatre of Death (originally released by London Independent Producers and later distributed on Anchor Bay DVD), the main title and end credits music is undeniably music used in Marvel Super-Heroes' Thor and Hulk episodes.
The film credits Elisabeth Lutyens as the composer, and conducted by Philip Martell. If this is the case for every cue in the film, then it might be possible to search for this film's soundtrack (if it was ever released in the 60s, or later, through a Varese Sarabande or Film Score type of label), or search for any library albums her work might have been a part of.
I've searched for Lutyen's score for this film, but have not had much luck at all. There's quite a lot of her other work before and after the production of this film, but as usual (it seems), where MSH or Spider-Man music is concerned, there are not a lot of leads and/or access.
