Bruno Mars has had a quiet but successful year. (Photo illustration: Yahoo News; photos: Kevin Winter/Getty Images, CBS Photo Archive/Getty Images, John Esparza/Getty Images) An emotional Lady Gaga clutches her Grammy for Best Pop Duo/Group Performance as she thanks her co-performer, Bruno Mars, before anyone else. With her hair dyed jet black and her eyebrows bleached, she's already abandoned the Western aesthetic stylings of their newly award-winning "Die With a Smile" collaboration in favor of a new era - but her adoration of him remains strong."I don't know music without Bruno," she says.