Be honest, you are a terrible singer and your humming is just as bad. So trying to get your baby to sleep at 2am, your voice is not going to help. SoundSpa helps you with this, with 4 different sound settings (Heartbeat, White Noise, Ocean, Lullaby) your baby will be off to sleep in no time. Then as it has a timer option, you will not have to hang around to turn the machine back off again. Being battery operated, it is fully transportable, for when you have gone somewhere for the evening or driving back home. Get your nights back and get the SoundSpa.