Many people, like to play soft music for babies. It is restful for the child and helps out the parent sitting in the rocking chair trying to get Junior to go to sleep so the parent can too. I have ended up asleep in a rocker with my daughter in my arms many times and no, I never dropped her.
If you can't sing your child to sleep (I sound like rusty nails being pulled) a good pair of speakers can. JMHO & it worked for me.