By Bach I'm pretty sure you are referring to Johann Sebastian Bach..
I'd say that the entire 20th century was filled with composers inspired by Bach, but I'd hesitate to call any one of them a "modern day Bach", because the conception of music had changed so much in the interim that the kind of craft-focused genre writing that Bach did was considered anathema to art. Every work had to be made anew. Hindemith seems to be a notable exception, and he is sometimes criticized for writing "generically", because it seems out of step with the practice of his time.
