Jazz diva Jan Eisen recorded this session live in the studio sans booths, headphones or added frills. That’s where recording engineer Dick Hamilton uses his ears and know-how to capture the quartet’s multifarious aspects in rather seamless fashion during this interleaving program of standards. Ex-Weather Report percussionist Alex Acuna lends his talents on various pieces within the context of this au naturale program. But it’s Ms. Eisen’s whispery vocals, awash with buoyant sensibilities, dynamism and prominent leadership qualities that provide the winning edge. She exudes radiance, while projecting warmth and sincerity by vocalizing atop her band-mates’ briskly executed swing vamps.

The Latin element weaves in and out here via the musicians’ breezy, acoustic-electric support. In effect, these pieces complement each other, where Ms. Eisen’s production adheres to a consistent stylization, enamored by her ability to sing standards in various octaves amid some scat maneuvers within various passages. On the samba comp titled "Darn That Dream," the ensemble pursues an optimistic sound, engendered by Ms. Eisen’s angelic vocals. And in other spots, bassist Benjamin May switches to cello as a vehicle for complementing and driving home Ms. Eisen’s sanguine balladry. Nonetheless, it’s a continuous stream of zestful jazz music that equates to good cheer and youthful sense of innocence.