I went along and basically learned a few of the songs they were doing at the time, which were quite a few of the songs we ended up doing on our first album.
No film should try to follow a trend, and do what film people think the public wants. There's no such thing as knowing what the public wants.
I mean, if you are directing actors to do one thing and then directing them to do something else entirely because the one thing you wanted them to do may not work, then you are just shattering their confidence in the project.