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 
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