Christina Grimmie covers that will give you chills

Christina Grimmie's incredible voice has been silenced. The singer from The Voice season 6 was shot Friday night while signing autographs after a concert in Orlando. But many knew her even before her TV appearance. Grimmie started out in her teens as a YouTube singer, eventually gaining more than 2 million subscribers. She also did originals and had a major-label album set to be released this fall, but here are some of our favorite covers.

Listen to how powerfully she covers Jason Mraz's "I Won't Give Up" even while she's feeling under the weather. Pay special attention to the line: "God knows we're worth it."

Her performance of Miley Cyrus' "Wrecking Ball" got all four The Voice judges to turn their chairs around. That look in Shakira's eyes when she first heard her? Pretty much how we all felt.

Love how the OneRepublic cover shows off her piano skills.

And we'll leave you with this, rendered haunting by yesterday's events.