British rock singer and actor David Bowie performs with American pop singer Bing Crosby for the TV special, 'Bing Crosby's Merrie Olde Christmas,' London, England. (Photo by CBS Photo Archive/Courtesy of Getty Images)
British rock singer and actor David Bowie performs with American pop singer Bing Crosby for the TV special, 'Bing Crosby's Merrie Olde Christmas.' Getty 

Give it a listen: 10 bold and unlikely musical collaborations