Aloha!
I never mentioned playback chain in detail yet;
I'm an Audiophile and a Jazz Aficionado, so music is my life, other than shaving of course. I have quite a few vintage high fidelity stereos in many rooms of my homes. I'm into Vinyl (records to the older guys) but I also do FLAC digital music files (lossless) and have hundreds of albums stored digitally. I have receivers and amplifiers and tuners from Marantz, Yamaha, Pioneer, McIntosh, Bose.... the list goes on. I have a Bose Wave Radio in my shave den. This is small enough to fit in the bathroom well, and it's mostly plastic so the moisture won't hurt it much. On this I have a Bluetooth Receiver so I can stream music from my phone to the Wave Radio. iPhone users can get an Airplay receiver to beam music to a stereo system without loss of audio quality. Bluetooth is OK (especially Apt-X Codec Bluetooth) but you do lose some fidelity. iPhones solved this years ago by using WiFi to beam music instead of Bluetooth frequencies. I usually play either music I've got stored on the phone, or i go with a live-stream of something via the internet like a terrestrial Jazz station or something eclectic like monocle.com (mentioned earlier).
I can't imagine spending all the time I do in the shaving den without music. But Carlosppena's comment upon opening this thread rings true. I like to "Hear" my razor (straight or shavette cutting whiskers - not so much DE) as audio feedback is important to me getting the shave done right. So I don't crank my shave den music at warp factor 9. Just loud enough to enjoy it and still be able to get audio feedback on the razor cutting wiskers.
Mahalo!
-Zip