"Ninety-nine per cent of opening bands stink"

In this quote, Gene Ween is revealing his opinion that the majority of opening bands are not very good. He uses the phrase "ninety-nine percent" to emphasize just the number of bands he thinks fall under this category. This could be interpreted as a severe criticism of the music industry and the quality of bands that are chosen to open for more established acts. It could also be seen as a reflection of Ween's personal experiences with opening bands, recommending that he has actually come across really few that have impressed him. Overall, this quote highlights the high requirements and expectations that artists like Gene Ween have for live performances.