A transaction card includes an audio circuit, a housing, a switch, and an account identifier. The audio circuit is configured to capture an audio file and to transform a pitch of the audio file. The audio circuit includes a speaker configured to play the captured audio file as transformed by the audio circuit with a different pitch than the pitch originally captured for the audio file. The housing substantially encloses the audio circuit. The switch is movable by a bearer of the transaction card external to the housing. When the bearer interacts with the switch, the audio circuit is activated to transform the pitch of the audio file to the different pitch. The account identifier is fixedly coupled to the housing, and the account identifier links the transaction card to an account or record, wherein the account identifier is machine readable.