Y se trata de ningún grupo con ese nombre:

He never sang to the feds, but it turns out Al Capone had a song in his heart. All it took was a stint in Alcatraz to bring it out.

Now, more than 70 years later, the tender love song that the ruthless crime boss penned while sitting in the pen is being recorded and released on CD. And an inscribed copy of the music and lyrics to «Madonna Mia» is up for sale at $65,000. […]

De acuerdo con este artículo, la pieza en cuestión la compuso durante su estancia en Alcatraz ayudado de algunos instrumentos que utilizaba también de otras formas poco ortodoxas:

«At one point he got into a fight with an inmate named Lucas, and Lucas stabbed him in the back,» […]. «Capone responded by hitting him in the face with his banjo.»

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