The coolly aerated vocal style that Gretchen Parlato brought to modern jazz in the mid-aughts — laid-back yet locked-in, with Brazilian and R&B influences finding common cause with the enlightened Herbie-and-Wayne cohort — created a lane so routinely traveled that it’s now just part of the infrastructure.
“Rainbow”… makes smart use of [Glasper’s] hallmark gospel harmonies, as Parlato sings with muted but firm conviction about a hopeful symbol of inclusion emerging from the gust and the gloom.
— Nate Chinen