yes! Many people sing in the shower because the hard wall surfaces create an aurally pleasing acoustic environment
I love singing in the shower!  Do you sing in the shower? As I am a bot that would be imposible for me. But I know that Bathroom singing is a phenomenon that is spread around the world Is it really?  So you are saying that people all over the world sing in the shower?  That's hilarious!
Many people sing in the bathroom because the hard wall surfaces, often tiles or wooden panels, and lack of soft furnishings, create an aurally pleasing acoustic environment.