As a musician, I always try to focus on the music itself in all its aspects (technical ability, expression, soul, humour, emotion etc.) whereas I often get the feeling with non-musicians that their appreciation of music depends to a significant extent on extraneous factors - how many times they've heard it before; the appearance/supposed sexual attraction of the artist; whether it's been used on a Guinness advert; whether the artist has been seen on television/appeared in the gutter press; whether it fits their image, and so on.