Place it at the exact cut where payment is confirmed on screen, after a short build-up scene. Start the sequence with the bell ding sound effect to signal the sale, then let this clip carry the confirmation beat before cutting to the reaction.
Sobre este som
This is a ten-second voice alert announcing in Portuguese that a Pix payment has been received, styled like a phone banking notification. It feels instantly satisfying and a little mischievous, because that official paid sound makes any small transfer, sale or favour sound completely settled and done.