Adele Solidarity Showing for Brussels At London Concert

3/23/2016 6:23 AM PDT BY TMZ STAFF

Adele led a crowd of thousands in an emotional show of support for the victims of the Brussels terrorist attack.

The singer performed at London's O2 arena Tuesday night, and got the crowd to sing along to the song, "Make You Feel My Love." The enormous crowd lit up the stadium with their cellphones and lighters.

At the end, she said, "I don't think I've ever actually been so moved before in my life at one of my shows, that was just so beautiful."