"My heart was & is still so heavy when i think of her not being with us," Kelly wrote of the song

By Jeff Nelson
July 11, 2016 11:45 AM

Tori Kelly is honoring her late friend Christina Grimmie with a musical tribute.

The singer released a new live acoustic track, “Blink of an Eye,” on YouTube Sunday.

“Can’t help but think who you would be if you just had the chance to turn 23 / It’s 2 a.m., I still don’t believe you’re gone / And the world keeps spinning on,” Kelly sings in the emotional tune, inspired by The Voice contestant who was 22 when she was shot by a fan on June 11 in Orlando while signing autographs after a concert.

“You had so many songs left to sing, so many stories that I’ll never get to read / Heaven holds you in its arms, and now I’m down here learning how to say goodbye in the blink of an eye,” the lyrics continue.

“You’re quiet now, while your melody plays on, and I’ll just sing along / When you took your last breath, you had so much life left / Can’t help but think it could have been me out there chasing a dream when suddenly it all stops – in a heartbeat.”

Christina Grimmie
Jason LaVeris/FilmMagic

Kelly, 23, shared the meaning behind the song, which she co-wrote with Zac Poor, on her YouTube page.

“i needed to write this song,” she posted. “my heart was & is still so heavy when i think of her not being with us. however, i am still comforted knowing that i’ll get to see her again someday in heaven. my prayers go out to her family & loved ones. even though this song had specific meaning, more recently i’m overwhelmed at the pain & the brokenness in the world today, & so this is really just me grieving. at all of it. life is so short.”

Tori Kelly
Ethan Miller/Getty

Less than 24 hours after Grimmie was killed at the Orlando concert venue, another gunman opened fire at nearby Orlando gay nightclub Pulse, killing 49 and injuring more than 50 others.

Last week, Grimmie’s family spoke out for the first time since her death, telling PEOPLE in an exclusive statement: “The outpouring of love and generosity that has been displayed to our family throughout these last few weeks has far exceeded anything we could have ever imagined. As we have always known, Christina’s life was so very special, not only to us, but to everyone she touched with her joyful heart, beautiful voice and love for life and the Lord.”