Who Knows, My Little Assistant Is a Domineering Female President

Single female protagonist + slow pace + non-cool writing In my previous life, I was a music major. I died suddenly the day before the national exam. I traveled to another world. The original owner of my body hanged myself after a breakup. The reason for breaking up with my ex was that he was nothing but handsome. However, Ye Qingzhou discovered that he had a very good memory and could recall every piece of music in his previous life. He even discovered that his voice was rich and diverse. He never expected that his ex-girlfriend's best friend Su Chiyou would secretly like her for a long time.