The Voice-O-Graph, is a machine which allowed people to record in the street their own voices direct to disc by 30-40¢.
This recording from the late 50’s is of three young men fans of the vocal group sound singing a capella / doo-wop.
The lead singer gets almost snarly and they break up laughing a bit, it's fun and quick at under a minute.
To Listen or Download, please visit;
https://app.box.com/s/f8umcfcx51tabkyx1ej1