Read from CBR On the theme song rights:
The classic animated series' theme song will make a triumphant return for X-Men '97 -- but it wasn't easy for Marvel to obtain the rights to it.
During an appearance at the Steel City Con in Pennsylvania, X-Men '97 consultant Eric Lewald revealed Disney and Marvel Studios paid a "heavy price" for the rights and had to jump through a number of hurdles.
"[The X-Men: The Animated Series theme song] wasn't a done deal necessarily when they were producing the new show," Lewald said. "The rights were all over the place. I think a secondary person had the rights to the music, so it was a negotiation for them. Obviously, you can't do the new show without that song... But the guy selling it knew the same thing, so I'm sure it was a heavy price."
Despite these legal hurdles, X-Men '97 -- which features a score composed by the Newton Brothers --will contain a version of the classic melody that opened all five seasons of X-Men: The Animated Series. The show debuted in 1992 and featured an action-packed introduction that featured Cyclops, Wolverine, Rogue, Storm, Beast, Gambit, Jubilee, Jean Grey and Professor X. The accompanying song has since become renowned as one of the most memorable cartoon themes of the '90s, and brief interpolations of it can be heard in recent Marvel Cinematic Universe media.