I have also suggested you look at contacting the band (or surviving members if using a 60s/70s act), plus fanzines, fan sites, fan clubs... make full use of the power of the web to tap into a wide range of potential sources of feedback, not to mention ideas. This should generally help with your research, not least to get a clearer idea of the target audience.
You could also consider following up any contacts made with requests for phone or email interviews, or simply post questions on fan forums, such as:
- what does the track [name] mean to you?
- if you were to make a video for this, what would it consist of?
- have you any thoughts on any existing, official, music videos for [band/act]?
- do you know of any useful online sources, especially linked to music videos or target audience, on [band]?
- do you know of any other unofficial videos for [band's] music? has any been used in TV, film or advertising?
- [summarise YOUR idea]: any thoughts on this?
- who would you say are the target audience for [band/act]? what do you base this on?
- how would you describe the brand, or identity, of [band]
- do you know of any recent magazine articles on [band]?
- [try record label espec with this] have [band] released any digipak CDs? have you got scans (or details of which mag published in) for any examples?
Just to stress, the following is a suggested template. You may opt for greater brevity, which is an important principle in seeking contact with busy people! Mary's email, below, got results!
[NAME2] [you could add mobile number (for record label/band; not forums/fanzines) +/or email]
[provide all group member names]
[One or more blog URLs, perhaps YouTube channel or link to your AS work (and mention having work screened at national film fest if you did), can all help establish your credentials]