Personally, I converted our in-house Flask app to a RoR application with View delegation to React. This was mostly to align the technology to the skills we currently have on the team, but I got a lot of experience in the process.
See if there is any room to convert your current Python applications to Ruby.
Working on a new production app right now that does not use Redux, I do not plan on backwards integration either. For reference, our team does have two applications that utilize Redux.
I would have liked to see less mainstream artists and more underground artists.
Hip hop, by definition, at least to me, is more of an underground culture evolving from jazz, funk and poetry. I also think most people have heard these songs because they are pretty widespread on the radio, like Lil Wayne, Jay-Z, Outkast, Drake, Beastie Boys... etc.
A better introduction would be to move through different hip hop periods to show how the sound has evolved as the genre has matured, including artists that are actually in it for the art and not solely for the money.