This past weekend the YouTube community and the music industry mourned the loss of Christina Grimmie. Grimmie was shot and killed Friday night while meeting with fans after a show at The Plaza Live theater in Orlando, Florida. She was just 22 years old.

Grimmie gained a large subscriber base performing covers on her YouTube channel, zeldalove64, starting in 2009. Fans loved her for her iconic haircut, big personality and even bigger voice. In 2014, Grimmie was a contestant on season 6 of the voice, working with coach Adam Levine. She would go on to finish in third place and sign a record deal soon after.

Grimmie always stayed active and engaged with her online audience through social media. She performed and collaborated on a number occasions with other YouTubers and artist, many of whom offered tribute performances in her honor.

Christina Grimmie first shared her passion for performing music on YouTube. In her memory, here are five of her most memorable performances:

Me Singing — "Titanium" by David Guetta feat. Sia — Christina Grimmie Cover

Grimmie’s performance of David Guetta and Sia’s “Titanium” as was powerful as it was incredible. The use of just an electric keyboard, common throughout many of her covers, allowed for Grimmie’s voice and range to shine.

"Just A Dream" by Nelly — Sam Tsui & Christina Grimmie

One of her most popular collaborations, "Just A Dream" featured Christina Grimmie along with fellow YouTube artists Sam Tsui. The video was produced by the incredible YouTube-based producer Kurt Hugo Schneider.

Me Singing - "I Won't Give Up" by Jason Mraz — Christina Grimmie Cover

Performing sick is difficult for any performer, but fans barely noticed in Grimmie's dainty cover of "I Won't Give Up". With her classic Grimmie hair and bright green headphones, this was the Christina many fans knew best.

Christina Grimmie singing "Counting Stars" by OneRepublic

In her first video of 2014, Grimmie performed One Republic's "Counting Stars". She wrote in the video description, "This year I got a lot of amazing stuff lined up for you so uhh...GET PSYCHED yes?! (; love ya team." In February 2014 she would go on to compete on NBC's The Voice.

Me Singing "Party in the USA" by Miley Cyrus - Christina Grimmie

One of her first YouTube covers in late 2009, Grimmie was open and honest about her struggles with the song's high notes. With low quality audio and video, and a Sonic the Hedgehog poster handing behind her, this honesty and authenticity was what many fans loved most about Christina.

Bonus: Christina Grimmie sings 'Wrecking Ball' The Voice Highlight Blind Auditions

The massively powerful performance of Miley Cyrus's "Wrecking Ball" was a four-chair turner for Christina Grimmie at The Voice's Blind Auditions. After the coaches presented their pitches, Grimmie chose to join Team Adam with Maroon 5 frontman Adam Levine. In reaction to Grimmie's sudden and tragic death, Levine wrote on Facebook and Twitter,

"Behati and I are absolutely devastated and heartbroken by Christina Grimmie's death. Our hearts go out to her family."

Grimmie's perfomances, original music and spirit will continue to live on online, and she will not soon be forgotten.