Zenonzard: The Animation (2020) : 1x3

This is the story about AI Nonoin Nillon who works for a record company as a composer. One day, Nonoin's manager approaches her with a job to write a song for a major pop idol group. The request was to "write the song with the group's essence in mind." This added note gave Nonoin a lot of trouble as she found herself creatively blocked. "I finally saw it, but I couldn't make it like I wanted." What is the answer she came to after all her worrying?