Getting permission for the song

After looking for songs on sites such as unsigned.com, I have found a song that I wish to use.

The song ans the artist's page can be found here:

http://www.unsigned.com/000sarahbird

I chose the song 'Under the sky'

Now I have found the song, I need to get permission to use it. To do this, I will email the artist. Unfortunately, there was no contact information on Sarah's unsigned.com page, so using Google I searched for her name. By doing this, I found out that since she had joined a band called Sugabeat, who's site I found. Here I found an email address, and so tried to contact her via this email.