Final answer:
A. R. Carlos Nakai has won two Grammy awards for his recordings featuring the Native American flute.
Step-by-step explanation:
The Grammy Award-winning artist known for recordings that feature Native American flute is A. R. Carlos Nakai. He has earned considerable acclaim for his work, which preserves and blends the traditional music of Native American culture with elements of contemporary music.
The flute's melodies are particularly celebrated for their evocative sound and spiritual depth, contributing to Nakai's success in winning two Grammy awards.