Much of his taste is not mine including My Sharona by the Knack and a lot of country. Here is an article on it:
”. . . much country music, but also songs by Joni Mitchell, Van Morrison and the Knack.
“iPod One,” as the player has been dubbed, is used by Bush while he pedals around his Texas ranch on a mountain bike, presidential media adviser Mark McKinnon told the newspaper.
The task of downloading the music falls to the 58-year-old president’s personal aide, Blake Gottesman, who buys individual songs and albums from the iTunes music store.
Not every track is “on-message.” The playlist—regarded by many as a mirror to the soul—includes musicians who campaigned against Bush, such as John Fogerty. Also on the iPod is the 1979 song “My Sharona” by the Knack, about a man pursuing a much younger woman.
Bush, who quit drinking after his 40th birthday, also listens to recovering alcoholic George Jones, a country singer who sings about heartbreak and drinking.”