Bruno Mars Has Another No. 1

Musician Bruno Mars performs onstage at the 54th Annual GRAMMY Awards held at Staples Center on February 12, 2012 in Los Angeles, California. Photo: Kevin Winter/Getty Images

So it is possible for a nonviral song to hit No. 1 with Billboard's new YouTube formula. "When I Was Your Man" is Bruno Mars's fifth No. 1; meanwhile, Macklemore and Ryan Lewis now have two songs in the top ten ("Thrift Shop" is No. 2, and "Can't Hold Us" just hit No. 7). If the singing goats are going to have a chance at Song of Summer, they better get their act together soon.