Answer questions. Provide relevant examples :

In the last few years, the expansion of streaming on sites like Spotify and YouTube, combined with larger teams of authors behind famous songs, has resulted in an increase in high-profile copyright infringement cases. Ed Sheeran, for example, is implicated in a legal battle over Shape of You, Spotify's most-streamed song ever. Obviously, as creating music is so different from how it was 50 years ago, the law must evolve to keep up with the times.

Critically analyse this statement in relation to the requirement of originality for musical works in copyrighting law.