Question: Which American banjo player was featured in the album "Once in a Very Blue Moon"
Sentence (from "Roger Sprung"): Roger Sprung (born August 29, 1930, in New York City) is an American banjo player and teacher best known for introducing authentic bluegrass banjo picking styles to the folk music community in the north and for the eclectic manner in which he has adapted bluegrass banjo techniques to music of other genres.
Relevant evidence: No