More than 100 musicians offering free concert tickets to help combat poverty.
One Direction, Ed Sheeran, Katy Perry, Jessie J and Arcade Fire are among the acts supporting the project.
Fans can attend shows included in the Global Citizen Tickets scheme by earning points through activities which support the cause like signing petitions and sharing content online.
Global Citizen aims to help 1.2 billion people worldwide suffering from extreme poverty with the main issues including hunger and disease.
Each ticket has a different point value and participants with enough points are entered into a lottery.