What has Christianity truly contributed to humanity

[Thumpalumpacus]

Western music really is not the possession of the religious. Many musicians who were not any sect wrote music for the church, as that was the only way to make a regular income.

Right, but I don't think that's true of Bach specifically, which is who I mentioned. He composed masses, "St Matthew's Passion" and others, and was a lifelong keyboardist in church services. Although he did write secular pieces, it's fair to say many of his greatest works were inspired by his faith.