Sting and Sir Elton John performed at a benefit concert in New York on Wednesday to raise money for a charity which supports rainforest tribes.
Sir Elton was in playful mood at the show
They joined Billy Joel, James Taylor and Bette Midler at the city's Carnegie Hall at a fund-raising show in aid of the Rainforest Foundation.
The singers reinterpreted hit songs from musical and film history at the Singing in the Rainforest concert.
The charity was launched by Sting and his wife Trudie Styler in 1989.
It was set up to support the indigenous populations of the world's rainforests.
The foundation works on projects in tropical rainforest areas, helping local people and non-governmental organisations to protect the habitats.
It also lobbies countries to address the underlying causes of the destruction of tropical rainforests.
This year's fund-raiser - the 13th annual event - was hosted by actors Antonio Banderas and Melanie Griffith.
Sting will be hosting a fund-raising reception before and after playing a concert at London's Royal Albert Hall on 16 May.