It's probably a copyright violation, in which case you can expect the Disney cartel to pursue it more aggressively than the US government pursues felony charges.
https://www.copyrightuser.org/create/creative-process/going-...
It's often hard to win melodic copyright violation suits, because IIRC you have to show intent to copy, not just they the melodies are similar.
But I stand by my claim that Disney pursues copyright lawsuits harder than the government prosecutes some felonies.