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What tours did the song have?
Powderfinger performed "My Happiness" live on the Late Show with David Letterman while touring North America with British rock group Coldplay.
What promotion did the song have?
put on heavy rotation by Los Angeles radio station KROQ-FM two months prior to its United States release.

Question: Was the song successful?
Self-contained rewrite: Was the song My Happiness by Powderfinger successful?