Demi Lovato and Nick Jonas paid tribute to the Orlando terrorist victims Saturday during a stop on their "Future Now" tour, as well as paying tribute to "The Voice" finalist Christina Grimmie who was murdered just two nights earlier.

Omar Seddique Mateen killed 49 people in the Pulse nightclub in Orlando June 12 and injured another 53.

The two performed an emotional version of R&B singer Andra Day's song "Rise Up," Time reported.

Day joined them in performing her song, immediately following a group prayer.

"Got to pay tribute to the victims, survivors, and all those affected by the Pulse shooting in Orlando with two of my favorite people last night, @nickjonas and @ddlovato," Day wrote on Instagram.

"Thank you for having me. Orlando our prayers, love, and support are with you."

Lovato and Jonas also invited employees from Pulse Nightclub, where the massacre took place, to attend the show free of charge.

The two are just some of the many musicians that have joined in memorializing the Orlando shooting victims.

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Melissa Etheridge wrote a song called Pulse in their honor.