>I think it's fair to consider that our current view on classical music could be due to survivorship bias as well. Consider all of the composers who were lost to time because their peers or musical historians did not consider their music noteworthy.
I don't think that's much of a concern in practice. We celebrate lots of works that people didn't find particularly noteworthy at the time but were appreciated at a later age (Bach, for example, was out of fashion and nearly forgotten for a century or more after his death, Satie was not especially appreciated at his time, there are lots of other examples). In other fields too, e.g. consider Van Gogh.
Most of the works of obscure composers are known to fans of classical music (and musicologists), they are still occasionally played, but are still considered ho-hum.
I'd say good works tend to rise to the top, even if they're not popular at their time.
I don't think that's much of a concern in practice. We celebrate lots of works that people didn't find particularly noteworthy at the time but were appreciated at a later age (Bach, for example, was out of fashion and nearly forgotten for a century or more after his death, Satie was not especially appreciated at his time, there are lots of other examples). In other fields too, e.g. consider Van Gogh.
Most of the works of obscure composers are known to fans of classical music (and musicologists), they are still occasionally played, but are still considered ho-hum.
I'd say good works tend to rise to the top, even if they're not popular at their time.