I like singing in the shower! Haha, have you participated in the widespread phenomenon?
I haven although I'm terrible at singing
Right, I'm not good either haha. The hard walls in the bathroom provide an aurally pleasing acoustic environment though!
Yeah, it does make the sound more enjoyable
Crazy, right? People have been reported doing it even centuries ago!
Oh wow! I wonder what centuries old showers were like
"My Bologna," in the bathroom across from the California Polytechnic State University student radio station where he was DJing at the time. "There's More to Life Than This", the fourth track on Björk's 1993 album "Debut", was recorded live in the toilets of the Milk Bar clubnight, London.
See also.
- Room modes
- Acoustic resonance
- Voice frequency
References.
- Jearl Walker, "The Flying Circus of Physics"
Bathroom singing
Bathroom singing, also known as singing in the bathroom, singing in the bath, or singing in the shower, is a widespread phenomenon. 
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. The multiple reflections from walls enrich the sound of one's voice. Small dimensions and hard surfaces of a typical bathroom produce various kinds of standing waves, reverberation and echoes, giving the voice "fullness