"XXX"  is a song written by American rapper Kendrick Lamar and  an Irish musician and actor, best known as the drummer of what Irish rock band?
XXX (Kendrick Lamar song) "XXX" (stylized as "XXX.") is a song by American rapper Kendrick Lamar, from his fourth studio album "Damn", released on April 14, 2017. The eleventh track on the album, the song was written by Lamar, Mike Will Made It, DJ Dahi, Sounwave, Anthony Tiffith, Bono, The Edge, Adam Clayton, and Larry Mullen Jr., and produced by Mike Will Made It, DJ Dahi, and Sounwave, with additional production by Top Dawg and Bēkon. The song features a sample of the yet-to-be released song "American Soul" by Irish rock band U2.
Jim Reilly James G. Reilly (born 1957) is the second drummer for the Northern Ireland based punk band Stiff Little Fingers, with whom he played from 1979 to 1981. He played on the LPs "Nobody's Heroes", "Go for It" and "Hanx". In 1981 he moved to the United States, where he played in two bands, Red Rockers, followed by The Raindogs. In the late 1980s he lived in Boston and worked as a band manager. He has since moved back to Northern Ireland. For a time in 2004, he played in SLF tribute band Little Fingers, and later led Jim Reilly's Alternative Soldiers, after which he played in a new band called The Dead Handsomes.