Target audience of artist/band

The target audience of The Montagues is between those of 15-24 years old. 'The Montagues' target both genders this is suggested by the demographic of those attending 'The Montagues' gigs. Teenagers and young adults have always been represented as a group with more disposable income meaning a good target audience for 'The Montagues'.I looked through an event where The Montagues were performing in Brighton, the target audience for the band appeared to range from between 15-24. The band includes members that are around the age of 17-18, so the fans can easily relate to the band. The attenders suggest that'The Montagues' have a mixed gender demographic. However, when researching offical charts shows and itunes,I discovered that only one artist in the UK TOP 40 is of the same genre as 'The Montagues' meaning perhaps less economic success for the band.