My favorite Sarah Vaughan albums are the ones with sparse accompaniment.
"After Hours" (Roulette) with just guitar & bass
"Sassy Swings the Tivoli" (Mercury) with trio - she's in amazing voice on this one
Jeez, this is all too eerily reminiscent of the Morris Levy case a few years ago. Levy was a notorious mobster record label & nightclub owner who played by his own rules for decades. He was finally convicted of racketeering and died before serving a day in prison. Many believe he faked his death and skipped town. He had the money and the power to bring it off.