"We were contracted to make a soundtrack album but there really wasn't enough new material in the movie to make a new record that I thought was interesting"

This quote by Roger Waters is referring to the procedure of producing a soundtrack album for a movie. Waters is stating that there wasn't enough new material in the film to make a record that he discovered fascinating. This could mean that the movie didn't have enough new material to make a soundtrack album that was distinct and innovative. It could also mean that the movie didn't have sufficient product that Waters discovered to be of high quality. Either way, it seems that Waters was not satisfied with the amount of new product in the movie and therefore was not able to develop a soundtrack album that he discovered fascinating. This quote highlights the importance of having enough new material in a movie in order to develop a soundtrack album that is of high quality and intriguing.