Contact With Artist's Management

I have contacted Brian Teefey regarding Christina Grimmie's track With Love with the following email:

Hello Brian,

My name is Aria Archer and I am a higher education student in London, England. I'm currently studying Media in my final year and I need to ask for permission to use a song copyrighted by Christina Grimmie and your company. For my project, I am required to record and develop a music video for a song of my choice and I was advised by my teacher to approach an independent/unsigned artist or band. I immediately thought of Christina's song With Love as a great track to use and one that is most deserving of a music video. Would I be able to use this song as the track for my project? If you have any questions, please feel free to ask away as it is within your right. Thank you for taking the time to consider this and I hope we can come to an agreement.

Aria

I hope to receive a reply within the next 3 days so I can make the correct agreements (if needs be) and I can begin setting dates and times to begin filming the video.