Revealed: how top pop stars are used to ‘launder the reputation’ of Koch family

But this night’s set was co-sponsored by Stand Together Music, an organization backed by the libertarian billionaire Charles Koch, who made his fortune in fossil fuels. Other sponsors of the party included the free-speech group Fire (which has received millions of dollars in contributions from the Charles G Koch charitable foundation), as well as the music outlet Spin, an official partner of Stand Together Music.