From my presentation and the feedback I received I felt that I had to focus my ideas further.
To do this I got a book called "Writing your dissertation - Derek Swetnam" to read through to clarify my thoughts and ideas to see what possible routes I could take. The book breaks down questions about the dissertation topic through titles which I have answered below.
General area of study
Graphic design and Music.
Branding, popular culture, trends, art work throughout time.
The effect of graphic / visual art work on the branding industry?
How design influences the popularity of music?
In a genre or location e.g Indie music in Manchester.
The importance of branding in the music industry.
The importance of music related visual / graphic art in Manchester.
From my answers I feel that the direction that I am going towards in is looking at the Manchester music scene and the popular artwork throughout time. Although this is a potential idea I still want to explore other options in what road I can go down.