On his 35th album as a leader, pianist and composer David Benoit changed up his game. Remarkably, 2 in Love is the very first time in his long career that he’s worked with a vocalist on an entire album. His chosen collaborator is Jane Monheit, one of the most celebrated mainstream jazz singers. Produced by the pianist, 2 in Love was cut live in the studio — a daunting prospect for most contemporary vocalists. But Monheit is no ordinary singer. Check her delivery on the knotty, Latin-tinged opener “Barcelona Nights.” On 2 in Love, Benoit couldn’t have chosen a more desirable collaborator than Monheit. Her openness to the range of material he offers in beautifully crafted songs is matched only by her command of their languages.