0_Apprentice
I love singing in the shower while my smartphone is playing a favorite song.
1_Wizard
Ditto!   Though I just usually sing whatever comes to mind.   No smartphone needed. 
0_Apprentice
I like to play the song without lyrics and sing the vocals part. It's nice because the acoustics and reverberations make it sound like I am a better singer than I am in reality.
1_Wizard
Ah yes.. that is a good idea.   The walls definitely help the sound of one's voice.