Ask any parent, if you find something that makes your baby stop crying for even like 5 minutes, you grab that thing, hold on for dear life and exploit the hell out of it until it doesn't work anymore and the baby starts shrieking again. It could be a particular funny voice, a lullaby, a special stuffed animal, maybe a little Benedryl...OK OK OK. Calm down. NOT Benedryl. Don't give your babies Benedryl, people.
For this baby, it's music. Specifically the dulcet tones of the late, great Notorious B.I.G.
Postscript: She also calls her papa "Big Papa" and he loves it when she does.