The Voice Season 6 contestant Christina Grimmie performing as part of The Voice Tour at Cobb Energy Centre on Sunday, June 29, 2014, in Atlanta.none
The Voice Season 6 contestant Christina Grimmie performing as part of The Voice Tour at Cobb Energy Centre on Sunday, June 29, 2014, in Atlanta.none
Christina Grimmie performs as the opener for Rachel Platten at Center Stage Theater on Wednesday, March 2, 2016, in Atlanta.AP
Christina Grimmie performs as the opener for Rachel Platten at Center Stage Theater on Wednesday, March 2, 2016, in Atlanta.AP
Christina Grimmie performs as the opener for Rachel Platten at Center Stage Theater on Wednesday, March 2, 2016, in Atlanta.AP
Christina Grimmie performs as the opener for Rachel Platten at Center Stage Theater on Wednesday, March 2, 2016, in Atlanta.AP
Christina Grimmie performs as the opener for Rachel Platten at Center Stage Theater on Wednesday, March 2, 2016, in Atlanta.AP
The Voice Season 6 contestant Christina Grimmie introduces Maroon 5 at the iHeartRadio Theater on Tuesday, August 26, 2014, in Burbank, Calif.none
The Voice Season 6 contestant Christina Grimmie introduces Maroon 5 at the iHeartRadio Theater on Tuesday, August 26, 2014, in Burbank, Calif.none
The Voice Season 6 contestant Christina Grimmie introduces Maroon 5 at the iHeartRadio Theater on Tuesday, August 26, 2014, in Burbank, Calif.none
The Voice Season 6 contestant Christina Grimmie introduces Maroon 5 at the iHeartRadio Theater on Tuesday, August 26, 2014, in Burbank, Calif.none
The Voice Season 6 contestant Christina Grimmie performing as part of The Voice Tour at Cobb Energy Centre on Sunday, June 29, 2014, in Atlanta.none
Christina Grimmie arrives at the 39th Annual American Music Awards on Sunday, Nov. 20, 2011 in Los Angeles.none
Christina Grimmie attends The Alliance for Children's Rights 21st Annual Dinner at The Beverly Hilton Hotel on March 7, 2013 in Beverly Hills, California.none
Christina Grimmie performing at Philips Arena on Saturday, October 26, 2013, in Atlanta.none
Christina Grimmie performing at Philips Arena on Saturday, October 26, 2013, in Atlanta.none
In this June 28, 2011 file photo, "The Voice" Season 6 contestant Christina Grimmie performs Boca Raton, Florida.none
Macy's IHeartRadio Rising Star, Christina Grimmie performs at Day 1 of the 2015 iHeartRadio Music Festival at the MGM Grand Garden Arena on Friday, September, 18, 2015 in Las VegasAP
Christina Grimmie attends the BCBGeneration Summer Solstice Party at Gracias Madre on Tuesday, June 23, 2015 in Los Angeles.AP
Christina Grimmie performing at Philips Arena on Saturday, October 26, 2013, in Atlanta.AP
From left, Christina Grimmie, Delvin Choice, and Kat Perkins seen at "The Voice" Top 12 Red Carpet Event on Tuesday, April 15, 2014 in Universal City, Calif.none