By Lara Walsh
Updated Jun 27, 2016 @ 8:15 am
Gwyneth Paltrow - Lead
Credit: David M. Benett/Getty

Coldplay fans were in for quite a treat this weekend as the band closed out the 2016 Glastonbury Festival in England: During their headlining set, the group performed a rousing rendition of the song "Up & Up" that included a very special cameo from Gwyneth Paltrow and frontman Chris Martin's two children.

The Iron Man actress and proud mom watched from a short distance and took to Instagram to share a sweet video of the performance. In the clip, the couple's daughter Apple, 12, and their 10-year-old son Moses joined dad Martin on stage to perform the song. Two other children, reportedly the brother-sister duo's cousins, also took to the stage to provide additional vocals. In a nod to her kids' names, Paltrow included the apple and ocean waves emojis as hashtags. Watch their cute performance here:

Martin, who carried a flag with the word "love" emblazed on it, also gave a touching speech and musical tribute to the indie group Viola Beach, whose four members, were killed in a car accident in February. He noted that the up-and-coming band "reminded us of ourselves in our early days."

"We're going to create Viola Beach's alternative future for them and let them play Glastonbury for a song," he said before performing their song, "Boys That Sing"

Watch his speech and Coldplay's cover in the video above.