Bridget Sova uses her 1stethoscope.
But instead of listening to young patients' heartbeats, she's recording them.
Bridget Sova, music therapist: "I've done between 60 and 70 heartbeat recordings."
Sova is a music therapist at Helen Devos Children's Hospital in Michigan.
She mixes the 2thumping heartbeat audio with a recording of her playing guitar or 3singing a tune of the family's choosing.
Bridget Sova, music therapist: "The hope is that families, when they listen to this, they'll immediately think of their son, their daughter."
Which is what Kim Betser does.
Kim Betser: "Probably daily.