I've listed below what I consider to be a few of the best of the best, in the hope it will encourage some readers to further explore a part of the world that's very worthwhile.
Classical music is an acquired taste that grows with experience.
Some people will find the music easier to appreciate than others do. Almost everyone will find some works and performances more satisfying than others, and will enjoy specific pieces of music more as they become more familiar. The recommendations below are chosen, not only for artistic excellence, but also for their approachability. Best wishes for enjoyable listening.