"Rap-Up" says that she possesses "gentle pop-tinged vocals" and a "sensually sweet voice" while Jim Farber of the "New York Daily News" describes her voice as having a "feathery tone, sky-high pitch and dazed delivery" that floats "above the beat, sexy and aloof"; Farber has also said that Aiko is "the female answer" to Frank Ocean.Jordan Sargent of Pitchfork Media compared Aiko's vocals to those of R&B singers Cassie, Brandy, Ciara and, the late Aaliyah.