What is "duotones"

Duotones is the fourth studio album by saxophonist Kenny G, released by Arista Records in 1986. It features one of Kenny G's best known songs, " Songbird", which reached number four on the US Billboard Hot 100.

The album peaked at number one on the Contemporary Jazz Albums chart, number five on the Jazz Albums chart, number six on the Billboard 200 and number eight on the R&B/Hip-Hop Albums chart.

The album was certified 5× Platinum by the RIAA.