At the age of 92 and still going strong, singer-songwriter Sheila Jordan has been one of the most revered and utterly unique voices in jazz for decades. Beginning with her debut album, 1963’s Portrait of Sheila on Blue Note Records, she pioneered a bebop-inflected approach to singing accompanied only by solo bass (in that case, a duet with Steve Swallow on one of her signature tunes, Bobby Timmons’ “Dat Dere”). Following the release of that album, however, Sheila retreated from the scene to concentrate on raising her daughter, working as a typist for the next two decades and not recording as a leader again for more than a dozen years.