Bing Crosby and Dave Croon were two of the most influential figures in popular music during the 20th century. Bing Crosby was an American singer and actor who had a successful career in radio, film, and television. He is best known for his crooning style of singing and his signature song 'White Christmas'. Dave Croon was an American jazz singer and songwriter who was known for his smooth, soulful voice and his ability to scat sing. He was also a prolific composer and arranger, writing many of his own songs. Together, Bing Crosby and Dave Croon helped to shape the sound of popular music during the mid-20th century.