The noise machine has lullaby, white noise, ocean, and heartbeat. That would be cool to be able to record your own heartbeat to use for the playback.Your post got me thinking Larson. Why isn't there something where you can record your heartbeat while the munchkin is in utero so you can play it back to them once they escape? Seems like that very familiar sound would be really soothing. Plus, isn't it common for new babies to calm when Mom holds them more than Dad? Again, return to the familiar sound?