Getting Copyright Permission

Over the summer, i emailed Sony Music Entertainment and asked them for permission to use the songs of artists Ryan O'Shaughnessy and Imogen Heap.

I found out how to contact SME by firstly searching for the artists i was looking for:

Imogen Heap: 

Ryan O'Shaunghnessy:

Then once i'd found out that they were both signed to the same label, i researched how to contact them:

Unfortunately SME didn't get back to me, however here's a screenshot of the email i sent to them asking for copyright permission: