Asking permission for song use

We have sent an email to the band that constructed the song that we are thinking of using. We have stated that we will not gain from using the video and it may be published but for private viewing only ( for whoever will be marking the blog) hopefully we will soon get a reply from the band ( we tried to send to the management as well however the email kept 'failing to send' ) .We will post a post to let you know how it goes.