I am very interested in playing with the idea of lazers and projected text. I also like the idea of using a repeating patterns to kind of play off against the beat of the music.
For the projected text i looked towards works i had seem before and liked. the TV series Fringe, by JJ Abrams makes good use of projected text into scenes in a very subtle, clever way.
The works of Jenny Holzer are a good example, and can appear almost lazer like