In the mid-1980s, “Do They Know It’s Christmas?” and “We Are the World” gathered dozens of the biggest stars in music to put on a show for a good cause. The two songs spawned imitators, but today, the charity megasingle is a relic of pop music’s past, except around the holidays. This month, we examine how good intentions, pique, excess, and vanity led to the rise and fall of the do-gooder celebrity pop song.  Email: [email protected]  

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