Why don't you just turn on the radio and sing along with that.
Open your mouth and let it flow!
Reading in the shower is as crazy as talking on the phone while on the toilet. Just no!
Sing from your heart not from your ........?
You could print out lyrics on a paper and tape it to the outside of a the shower if you have see through walls or doors. If they’re not see through or if the glass dogs up to much you could tape the lyrics on the wall higher than where the shower water sprays. A water proof iPhone would also do the trip but I don’t know if anyone has those yet.
Start by printing the lyrics. Then laminate them. (That hard plastic on your license is laminate) Then tape them to your shower wall.
lol!! Get a waterresistant mobile. Sing along when you take shower.