As of October 2023, there is no widely recognized artist by the name of Danielle Alexander in the music industry. It's possible that she is an emerging artist or has a local following, but detailed information about her genre, notable works, and impact on music is not available in the historical records up to that date. If you have more specific information or context about her, I could potentially assist you better. Otherwise, please check for any recent updates or developments regarding her career.