Oh, Play That Thing (2004) is a novel by Irish writer Roddy Doyle.

[1][2] Having fallen foul of his erstwhile comrades in the Irish Republican Army (IRA), Henry Smart escapes to America.

[1][2] In New York City, he becomes involved in advertising, pornography and bootlegging.

[2] After stepping on the toes of the Mob, Henry heads for Chicago, where he becomes the manager and partner-in-crime of Louis Armstrong.

[1][2] He becomes reunited with his wife and daughter, and, much to his dismay, the IRA.