Japanese pop star AYAKA called on the crowd at the Tokyo LIVE EARTH concert to help save the world.
The star, part of the line-up at the Japanese event, has already started changing the way she lives in a bid to cause less damage to the environment.
Speaking at the concert, she said, "We can start helping by doing something small.
"I started to carry my own eco-bag so I don't have to use plastic grocery bags, and use my own chopsticks instead of disposable ones."
Margarita or margherita? It's all the same to Liam Gallagher.
The pair will be seen teaming up with the rest of the Justice League in November.