Question:  Ballad for Americans is a studio album of phonograph records by an American singer and actor whose sold how many records, tapes, compact discs and digital downloads?
Sentence (from "Bing Crosby"): Crosby's trademark warm bass-baritone voice made him the best-selling recording artist of the 20th century, having sold over one billion records, tapes, compact discs and digital downloads around the world.
Relevant evidence: Yes