What is the ruling on money acquired from a university competition that required making a purposeful video, but included music that was added out of necessity for the sake of coherence, knowing the dire need for this money?

"Soundtracks are considered unlawful by the majority of scholars. However, the money earned from a film does not become entirely unlawful as long as the film is beneficial and free from other Sharia (definition)-prohibited elements. Nevertheless, the portion of the earnings corresponding to that music is considered unlawful. It is better and more scrupulous to refrain from all of this money."