I presented my current ideas at our next performance class on Monday but was told my premise was still too vague, and if I were to do a series of pieces from over time they would need to be linked by a common musical feature. There are a number of options here as there are several interesting musical features that have linked progressive music over the years. The themes I am strongly considering at the moment are concept albums and odd time signatures, both of which would offer a wide range of options in terms of pieces to play. I will forward these and other ideas for discussion with my tutors and hopefully have a final decision made soon so I can crack on with putting the pieces together.