Some of those records are highly valuable. In Freitas’s living room, a coffee table was covered with recently acquired rarities. On top of a stack of 45s sat “Barbie,” a 1962 single by Kenny and the Cadets, a short-lived group featuring the Beach Boys’ Brian Wilson on lead vocals and, as backup singers, Wilson’s brother Carl and their mother, Audree. In the same stack was another single – “Heartache Souvenirs"/"Chicken Shack,” by William Powell – that has fetched as much as $5,000 on eBay. Nearby sat a Cuban album by Ivette Hernandez, a pianist who left Cuba after Fidel Castro took power; Hernandez’s likeness on the cover was emblazoned with a bold black stamp that read, in Spanish, “Traitor to the Cuban Revolution.”