 "), a three-hour tribute concert in honor of slain singer Selena (who was murdered via gunshot in March 1995 by a fan who worked as part of her managerial staff).The concert earned a 35.9 Nielsen household rating, becoming the highest-rated program that night on all of the network television as well as the most-watched Spanish-language program in American television history.On February 9, 2006, Univision Communications announced that it was putting itself up for sale.